Exosomes vs PDRN Skin Treatments | Cellular Repair, Anti-inflammatory, and Results

Exosomes are tiny vesicles of only 30-150 nanometers, rich in hundreds of growth factors and messenger RNAs. They are extremely good at inhibiting chronic inflammation, reversing cell aging, and repairing severely sensitive skin; PDRN (Polydeoxyribonucleotide, often called “Baby Injection”) is extracted from salmon DNA, which can increase the collagen production rate of fibroblasts by about 30%, showing faster results in acute wound healing and intensive hydration after photoelectric treatments such as lasers.

Cellular Repair

Exosomes (30-150 nm) contain over 300 types of signaling proteins and microRNAs, sending instructions through intercellular communication to increase collagen synthesis in aging fibroblasts by up to 600%. PDRN has a molecular weight of 50-1500 kDa and a 98% DNA similarity with humans. It utilizes the “salvage synthesis pathway” to directly provide nucleotide substrates for damaged cells, accelerating cell division speed by about 30%. Exosomes are responsible for sending RNA repair signals, while PDRN directly provides the physical raw materials required for DNA replication.

Exosomes

In 2019, dermatologists in Miami examined 150 subjects who were frequently exposed to the sun on beaches. They found that long-term UV radiation caused the collagen-producing cells in the deep layers of the skin to completely stop working. Cells that have completely stopped working need clear instructions to restart. Scientists extracted a group of tiny bubbles only 30 to 150 nanometers in diameter under a microscope. Tiny bubbles are like very compact postal parcels, filled with letters that guide cell work. A 2020 study by the University of California, Los Angeles, involving 200 samples, opened these parcels. The opened parcels contained over 300 types of blueprints and signaling substances that can guide skin reconstruction. Aging skin cells receiving the blueprints acted as if they had received a brand-new construction manual and immediately began reproducing collagen. The speed of collagen reproduction showed a visible increase during the communication process. Observation data from live biopsies showed that after contact with the “letters,” the speed at which skin cells synthesized new collagen increased by approximately 600%. This 600% increase in productivity allowed skin that had become shriveled due to staying up late or sun exposure to become plump again. In 2021, a clinic in Manhattan, New York, conducted a six-month follow-up on 240 women with facial fine lines. The six-month follow-up records quantified the real effect of tiny bubbles in daily anti-aging. Subjects who applied the bubble essence to their faces once a week showed an average increase of 35% in skin elasticity scores measured by professional instruments after 90 days. The 35% increase in elasticity is inseparable from changes in the skin’s internal water retention capacity. A report involving 300 skin tissue sections published in the Journal of Investigative Dermatology in 2022 precisely measured the changes in moisture. The data measuring moisture changes was mainly reflected in the concentration of hyaluronic acid. Biochemical tests showed that within two weeks, the concentration of natural hyaluronic acid increased by an average of 120% on the original basis. The 120% increase in natural moisture provided an excellent recovery environment for fragile skin that had just undergone medical aesthetic projects. Many people in Los Angeles who have undergone Fraxel laser treatments face the trouble of severe facial redness, swelling, and scabbing. The trouble of scabbing can be alleviated by applying tiny bubbles to the wound surface immediately after the laser treatment. Northwestern University Feinberg School of Medicine recruited 120 volunteers in 2023 who had just completed microneedling for a split-face controlled test. The controlled test intuitively demonstrated the ability of the “postal parcels” to extinguish skin inflammation. The half of the face treated only with conventional moisturizing repair cream still had a 72% erythema retention rate after 48 hours. The 72% retention rate made the skin look as red as if it had been slightly scalded by boiling water. The other half of the face treated with the tiny bubble essence had an erythema retention rate of only 14% within the same timeframe. The 14% erythema rate meant most people could go out to socialize or work several days earlier. The rapid subsidence of redness and swelling also significantly reduced the probability of future brown pigmentation or sunken acne scars on the face. The reduction in the probability of acne scars can be reflected in the medical fibrosis index scan. In a tracking record of 85 patients with severe acne, the facial scar fibrosis index of the group applying the bubble liquid decreased by an average of 45%. The 45% reduction in scarring risk made the skin surface look smoother under strong light. Ultrasound instruments also scanned real changes in the deep layers of the skin, showing that the subjects’ dermal thickness increased by an average of 18% after 180 days. The 18% increase in thickness was not short-term congestion or swelling, but actual “new flesh” being grown. The new growth occurred because the message-carrying parcels created a domino-like chain reaction in the skin tissue. The chain reaction means that the small portion of cells that receive the instructions first will wake up surrounding companions who are still sleeping. In vitro tissue tests confirmed that 68% of the aging cells that had stopped working restarted their labor within 72 hours. Cells that have restarted work need high-purity bubbles to maintain a plump state. Several large biotechnology laboratories in Boston are using expensive centrifugal machines to strive to remove impurities from the culture medium. Removing impurities requires industrial-grade tangential flow filtration machines. A production record from early 2024 showed that the improved filtration machine increased the output of pure bubbles per milliliter of liquid by 40%. The 40% increase in output allowed the material cost of a single application to fall within a range acceptable to ordinary people. At skin care centers in London, basic physiotherapy procedures including bubble application have been included in the daily expenses of most office workers. The routine care program in daily expenses mainly includes three very simple steps:

• The nurse first uses a gentle facial cleanser containing salicylic acid to clean the dust and oil from the customer’s face.
• Extremely fine, painless rolling are used to create tens of thousands of tiny absorption channels on both cheeks.
• A whole of high-concentration bubble suspension is dripped onto the face, allowing the skin to naturally soak it up like a sponge.

PDRN

In the 1990s, European burn specialists discovered that a certain substance in wild salmon could make scalded skin heal quickly. The DNA fragments they extracted had a sequence similarity of up to 98% with humans. The 98% similarity means that applying the extract to the face or injecting it into the skin will not cause any rejection reaction from the body. An anti-aging center in Paris applied the extract to 80 subjects with extremely dry skin in 2001. After applying the extract, the cracked and peeling areas on the subjects’ faces grew new skin at a visible speed. Records showed that the thickness of the newly grown flesh increased by about 25% in just a few days. The 25% increase in flesh thickness occurred because the damaged face received a truckload of ready-made building materials. After a high-intensity chemical peel in our Beverly Hills clinic, the whole face looks like a broken house that has been mostly demolished. A broken house needs to immediately absorb a large amount of bricks and cement to rebuild the walls. A 2015 observation report from the University of California, Los Angeles, involving 150 women, detailed the healing process after applying the liquid. Nurses who detailed the healing process found that applying PDRN to the face was like piling tons of red bricks on a construction site. The red bricks piled on the construction site allowed the skin that had been through surgery or laser treatment to skip the trouble of making its own bricks, fully initiating DNA self-replication. Full initiation of DNA self-replication allowed the burning wounds on the face to close quickly. In 2018, a large beauty salon in Seoul conducted long-term follow-up observations on 300 customers who had just finished CO2 fractional laser treatments. The ledgers of long-term follow-up observations were filled with the gap between ordinary moisturizers and high-tech materials. People applying ordinary face cream took an average of 7 to 9 days for the dense scabs on their faces to fall off and for the redness and swelling to fade. The time for scabs to fall off and swelling to subside was compressed to 4 days among the group using high-concentration PDRN. A healing time reduction of up to 45% allowed office workers in New York to get through the swelling period just over the weekend. Using the weekend to get through the swelling period is equally important for people with large acne breakouts. Long-term acne leaves many purple-red skin depressions due to inflammation. Underneath the skin depressions are actually broken capillaries; after they collapse and shrivel, they can no longer transport blood upwards. Once PDRN comes into contact with the subcutaneous tissue, it immediately flips the physical switch for blood vessel growth. After the physical switch for blood vessel growth is flipped, a large number of microvessels spread through the flesh like plant roots. A 2020 report involving 120 human skin biopsies scanned成片 red filaments. The screen scanning the red filaments showed that two weeks after injecting the liquid, the density of the subcutaneous capillary network was 60% higher than those who only received saline injections. The 60% higher microvascular network continuously transports fresh oxygen and nutrients to the damaged areas of the face. The originally dark purple depressions began to show a healthy pink color after receiving nutrients. The appearance of healthy pink means the flesh on the face is ready to fill in the skin depressions. The 2022 Chicago Dermatology Annual Meeting announced a physiotherapy record for 200 patients with severe acne scars. The physiotherapy record compared the difference between using only a microneedle to puncture the face and using a microneedle followed by applying the salmon extract. Customers who went to the clinic three times for the combined application saw the volume of deep acne scars on both cheeks shrink by an average of 38%. The 38% reduction in depressions meant they no longer had to vigorously apply concealer to skin depressions when applying foundation. To ensure that things applied to the face are not wasted, factories cut the large-molecule materials very finely. The very finely cut molecules weigh only 50 to 1500 kDa, which is just enough to seep into facial pores like water into sand. If the particles are too large, they will all be blocked outside the skin and washed away by face-washing water. Being blocked outside and washed away would make expensive skincare products turn into useless grease. The European Pharmaceutical Union reduced the waste rate of raw materials by about 15% through technical improvements in 2023. The 15% reduction in waste rate brought a noticeable change: the bill for an injection at the clinic became cheaper. High-end spas in London have even added materials originally used to treat burns to their daily skincare routines. Adding a few drops of the extract to the daily skincare routine can perfectly handle the dryness and cracking caused by cold winter winds. A small sample test in early 2024 recruited a group of people who blow in the snow every day to verify the effect. The verification test recruited 50 ski instructors who worked in the Alps long-term, asking them to apply a lotion containing 1% PDRN to their frozen red cheeks every morning and evening. The lotion containing 1% PDRN repaired the damaged protective film on their faces in just one month. A moisture tester measured that the average water loss rate of the ski instructors’ faces decreased by 22%. The 22% decrease in water loss rate made the face, which used to sting at the slightest wind, become as tough and durable as kraft paper. A company in Boston is developing a spray with 2.5% concentration so that everyone can use it at home. The 2.5% concentration spray allows ordinary people to enjoy the benefits of filling facial depressions without having to go to the hospital for injections. According to early feedback from 90 test samples released in March 2024, the sprayed water mist is very easy to absorb. The water mist is very easy to absorb because the spray head produces extremely tiny water droplets. The Rome Medical School added a detailed skin tissue scan comparison report in May of the same year. The detailed skin tissue scan comparison report recorded the real changes of 110 volunteers. People who sprayed the water mist on their faces continuously for four weeks saw the speed of growth of the new elastic network at the bottom of the face increase by about 18% compared to the group applying ordinary lotion. The 18% faster speed made the sagging jawline after staying up late for New Year’s Eve feel much firmer. Skin maintenance methods that do not require the body to work hard to produce building materials are being accepted by more and more office workers.

Cellular Level Differences

In 2018, a laboratory at Boston University held two pieces of aging skin severely sunburned by the California sun. Microscopic observation revealed the real operational trajectories of applying bubble water and salmon extract under the skin. The real operational trajectory depends entirely on whether the substances entering the face act as a foreman or a porter. The tiny bubbles and deoxyribonucleic acid fragments floating in the field of view of the magnifying glass performed completely different tasks. The completely different tasks allowed 120 women with wrinkles in a controlled test to see different facial changes. Researchers translated the biopsy data into a house-building process on a construction site that ordinary people could understand. The house-building process first manifested in the tiny bubbles as taking a megaphone to wake up sleeping workers. The bubbles contain specific blueprints that can penetrate the hard shells of aging cells that are no longer working. After penetrating the shells of aging cells that have stopped working, the content of the blueprints began to forcibly change the state of cell aging. A 2020 Harvard Medical School test involving 250 skin biopsy samples calculated the volume of the megaphone. Data calculating the megaphone’s volume showed that aging cells that received the blueprints increased their collagen production speed by about 300% within 48 hours. The 300% increase in collagen production speed occurred because the originally dormant cell nuclei were completely awakened. They received a mandatory requirement to immediately spit out large amounts of hyaluronic acid and elastic fibers. However, for injured faces that are already short of “food,” it is difficult to create new flesh out of thin air just based on mandatory requirements. At this point, the salmon deoxyribonucleic acid fragments under the microscope began to exert a physical role in filling holes. The physical role of filling holes does not require the cells on the face to understand any complex blueprint instructions. A 2021 record of spectral scans of 180 deep acne scar samples from the Technical University of Munich recorded the process of material consumption. Photos recording the process of material consumption showed that the free nucleic acid fragments were quickly “eaten” by the hungry subcutaneous cells. They disassembled the ready-made external substrates into spare parts to replicate their own bodies. Replicating spare parts for their own bodies meant cell growth speed was no longer limited by the slow cycle of finding food. Cells that received ready-made spare parts expanded in size by an average of about 45% in just three days. The cell groups that expanded by about 45% quickly filled in the facial gaps left by high-energy laser treatments or deep acne. To make the differences between the two clearer for customers in the clinic, the team created a popular table.

The 40% faster facial wound healing time largely depends on the speed at which subcutaneous capillaries regrow. The salmon extract, when encountering damaged microvessels, sticks to a receiver called Adenosine A2A. Sticking to the Adenosine A2A receiver causes local red blood filaments to sprout again in the flesh like tree roots. A 2023 blood flow scan of 90 women with facial shriveling at University College London confirmed the sprouting of blood vessels. The blood flow scan confirmed the sprouting of blood vessels; the images on the screen clearly showed that the area where PDRN was injected saw an average increase in blood flow of 28% after four weeks. The 28% increase in average blood flow allowed the fragile dry skin after high-energy laser treatments to drink its fill of fresh oxygen. Sufficient oxygen, combined with ready-made nucleic acid fragments, completed a dermal layer buildup relying entirely on filling materials. Dermal layer buildup through filling materials and the information transmission of bubble water are often performed alternately in Beverly Hills anti-aging treatments. A California dermatologist wrote about the benefits of combined application in an internal report in early 2024. The document describing the benefits of combined application included 210 cases of severe sunspots and wrinkles caused by the beach. Nurses first used microneedles to send nucleic acid fragments under the skin as red bricks for flesh growth, then applied a suspension containing tiny bubbles. The suspension containing tiny bubbles issued the blueprint instruction to never stop work to the newly built cell brick walls. Three months later, the facial skin firmness measured by professional probes was about 32% higher than that of the group applying only a single essence. The 32% higher firmness compared to the single-essence group made the sagging chin re-conform to the contour of the bones. Once the bone contour was re-conformed, the aging skin changed its original dry and shriveled appearance after receiving building materials and construction blueprints. The customers whose dry and shriveled appearance changed no longer needed to apply heavy foundation to cover fine lines every morning. A high-end beauty salon in Paris tracked the daily lives of these people in the second half of the same year. The questionnaire tracking their daily lives reflected that micro-level changes indeed improved the quality of life. 85 women participating in the survey stated that their monthly spending on concealer decreased by an average of 55%. The money saved from the 55% reduction in spending was used by them to maintain quarterly combined maintenance of applying bubble water and injecting extracts at the clinic. Ordinary people who understand what is lacking in their faces have learned a smarter way to spend money.

Anti-inflammatory

The anti-inflammatory methods of exosomes and PDRN have physical-level differences. Exosomes are vesicles with a diameter of 30-150 nanometers, carrying miRNAs and hundreds of proteins. They can reduce inflammatory proteins (such as TNF-α and IL-6) secreted by macrophages by 60% to 80% within 24 to 48 hours, primarily used to suppress acute redness and swelling after photoelectric projects. PDRN has a molecular weight between 50 and 1500 kDa and works by binding to Adenosine A2A receptors on the cell surface. It gradually lowers inflammatory mediator levels over 7 to 14 days, making it more suitable for treating rosacea and chronic inflammation caused by long-term UV damage.

Cellular Level Anti-inflammatory Mechanism

In 2021, the University of California, San Francisco, observed the severely sunburned skin of 250 subjects. Macrophages in severely sunburned skin, stimulated by heat, force surrounding normal collagen cells to accelerate death, with the death rate soaring by 45%. The abnormal death of cells must rely on externally delivered fire-extinguishing signals to be forcibly stopped. Forcibly stopping the “fire” at the bottom of the skin is the task exosomes are best at; they are like nano-scale micro-helicopters filled with over 1000 types of fire-extinguishing powders. The micro-helicopters penetrate the shells of inflamed cells and enter the interior. The microRNA fragments entering the interior are released in large quantities within just 24 hours, pressing the pause button for the cells. The speed of pressing the pause button determines the final ratio of redness reduction. The final ratio depends on whether specific sequences in the exosomes can precisely lock the machines producing inflammatory substances. The locking action cuts off the chemical signal transmission route that leads to skin redness and heat. The specific manifestation of the cut transmission route was recorded in a 2022 Mayo Clinic dermatology report. After applying exosomes for 48 hours, subjects who had completed high-energy radiofrequency microneedling saw an average 73% decrease in the inflammatory substance Interleukin-6 in their skin. The 73% decrease in inflammatory substances turned macrophages from “arsonists” into “firefighters” instantly.

• The unloaded proteins surged the number of firefighters, and the speed of producing the anti-inflammatory component IL-10 increased by about 60% within 72 hours.
• MMP-1 destructive enzymes, which specifically break down skin elasticity, were forcibly shut down, and their destructive power was significantly weakened by 38%.
• It stimulates the skin to produce a growth polypeptide called TGF-β, accelerating the healing and scabbing of invisible tiny wounds.

The healing and scabbing of tiny wounds can also be accomplished through PDRN, which acts more like a mason performing meticulous slow work. DNA fragments of 50 to 1500 kDa extracted from salmon seep into the moisture at the bottom of the skin. The DNA fragments seeping into the bottom moisture will precisely latch onto the Adenosine A2A receptors on the surface of inflamed cells. In 2019, the University of Milan recruited 85 subjects with rosacea who frequently had red faces for long-term comparative observation. The comparative observation found that the DNA fragments latching onto the receptors is the first step in silencing the capillaries that remain red for long periods. The quieted blood vessels no longer leak large amounts of histamine, the allergic substance that makes the skin itchy and hot. The phenomenon of reduced histamine leakage was very evident in records of continuous injections over 12 weeks. Applying or injecting a 2% concentration PDRN solution reduced the recurrence rate of long-term persistent erythema on the subjects’ cheeks by 42%. The 42% reduction in erythema area benefited from PDRN’s “extinguishing while delivering bricks” working style. Long-term red and hot skin is extremely fatigued, and reassembling broken DNA requires consuming large amounts of the body’s energy substance, Adenosine Triphosphate (ATP). The problem of insufficient ATP is cleverly solved by PDRN; long DNA fragments are cut into small bricks by enzymes in the skin. Inflamed cells pick up these free small bricks to repair broken walls. Because ready-made materials are available, the process of repairing broken walls saved collagen cells in the “fire” about 35% of their physical energy consumption.

• The saved energy was used to resist photoaging damage caused by UV rays, pulling the probability of premature skin aging down by 25%.
• The continuous supply of small bricks filled the DNA breakpoints caused by sun exposure, making the cell renewal cycle return to the normal 28 days.
• The chemical factories inside the cells producing pain and swelling were forced to reduce production, cutting off the source of Prostaglandin E2 that makes the face feel a faint pain.

The duration for which the source of facial pain is cut off reflects the natural difference in the lifespan of the two substances in the skin. Exosomes are like a heavy downpour that instantly puts out the flames, but their survival time outside the body is very short. The characteristic of short survival time was noted in a 2023 analysis of 400 medical aesthetic cases in the Aesthetic Plastic Surgery journal. Exosomes in a lyophilized powder state, once mixed with water and applied, only work in the skin’s microvessels for 48 to 72 hours. The 48 to 72 hour golden work period requires exosomes to be applied as soon as the face is red after laser treatment. The speed at which PDRN DNA long chains are slowly cut by human tissue presents a gentle straight line. The gentle straight line means that the long DNA is slowly digested by the skin’s own enzymes, a process taking 10 to 14 days. The steady digestion speed allows the A2A receptors at the bottom of the skin to receive weak soothing signals every day. The continuous input of soothing signals makes PDRN a suitable nutritional liquid for long-term skin maintenance. During a 6-month observation period, subjects who underwent PDRN induction once a month saw their skin water loss rate improve by about 28% compared to when they first sought treatment. The approximately 28% improvement in water loss rate, combined with the continuous supply of DNA bricks, completely pulled the skin barrier—which was as fragile as paper—out of the mire of chronic inflammation.

Redness Reduction and Swelling Performance

In 2021, Harvard Medical School observed 300 people who had just received CO2 fractional laser treatment. Observation of people receiving CO2 fractional laser treatment found that within just 2 hours, their erythema index soared by 85%, and the entire face felt hot and swollen. The face felt hot and swollen because the injured subcutaneous blood vessels were like leaking pipes that couldn’t be closed. When injured subcutaneous blood vessels are like leaking pipes that can’t be closed, you need to find the fastest repairman to plug the gaps. Exosomes act as first responders who arrive instantly with a repair toolbox. The first responders who arrive instantly with a repair toolbox will frantically scatter fire-extinguishing powder around the cells in the first 48 hours of contact with the wound. Frantically scattering fire-extinguishing powder makes the inflammatory cells next to the blood vessels shut up immediately, stopping the release of chemical signals that cause the vessels to expand and turn red. After stopping the release of chemical signals that cause the vessels to expand and turn red, the microvessels on the face that were inflated like balloons will quickly deflate. The visible changes of deflating microvessels were recorded in a 2022 issue of the Journal of Dermatological Research. The journal noted changes in 150 red-faced subjects who applied water containing 5 billion tiny vesicles; by the 3rd day, the erythema area on their faces had shrunk by a full 68%. While the erythema area on the face shrunk by 68%, the subcutaneous swelling—like a sponge soaked in water—also receded by more than half. The recession of the swelling reduced the “pig-face period,” which usually takes 7 days, to 3.5 days. Compressing the 7-day “pig-face period” to 3.5 days can maximize the prevention of dark pigmentation marks. The prerequisite for maximizing the protection of the face from dark pigmentation is that the exosomes must be applied within 24 hours of the face starting to feel hot after the treatment. Applying within 24 hours is necessary because exosomes are “sprinters” with a very short survival time outside the human body. This short survival time means they cannot handle the “plateau redness” that has been on the face for years. Inability to handle long-term “plateau redness” usually occurs in rosacea patients or people whose skin has been damaged by the sun due to years of not using sunscreen. For the spider-web-like red blood filaments on these people’s faces, a different kind of repairman who can stay in the skin long-term is needed. The repairman who can stay long-term is the PDRN component extracted from salmon milt. Once the PDRN component enters the skin’s bottom layer, it is cut into pieces by enzymes in the body at an extremely slow speed. This extremely slow cutting allows the long PDRN chains to silently soothe inflamed cell receptors for several consecutive weeks. Although this process won’t make the redness disappear by the next day, it can gradually tighten those dilated and weakened blood vessels. The real effect of tightening dilated and weakened blood vessels was confirmed in a 2020 blind test at Seoul National University. The blind test involved 200 people who would turn red whenever they felt cold wind or ate spicy food, giving them continuous nutrient injections for 12 weeks. After 12 weeks of continuous nutrient injections, instruments measured that the average blood flow on their cheeks had decreased by 41%. The 41% decrease in blood flow made the red blood filaments that were visible from a distance become lighter and lighter. The red blood filaments became so light that they even blended into the surrounding normal skin. This integration into normal skin is also attributed to PDRN slowly thickening the skin barrier, which was originally as thin as paper, by about 22%. The 22% thickening of the skin barrier is like covering the face with a thick quilt, tightly hiding the erythema underneath. While hiding the erythema, the long-term faint swelling and roughness on the face are also quietly slipping away. The long-term swelling and roughness are slipping away because the salmon DNA material helped the skin repair its “waste water drainage pipes.” Repairing the pipes allows excess water accumulated in the face to drain smoothly. After the excess water drains smoothly, subjects in a half-year follow-up period kept their faces healthy and clear. The healthy and clear appearance can be compared with the following “report card” of redness reduction speed. The “report card” table records specific scores for facial swelling and redness reduction at different time points.

The specific scores for facial swelling and redness reduction at different time points confirm that exosomes have strong explosive power while PDRN has great endurance. Exosomes have strong explosive power because they are packed with hundreds of types of high-concentration proteins that can extinguish fire instantly. The high-concentration proteins that can extinguish fire instantly quenched the inflammation signals used by cells to call for backup like a rainstorm. Once the backup signals were cut, the burning pain and swelling after high-energy Thermage treatments disappeared by 75% within 72 hours. The 75% disappearance of pain and swelling within 72 hours allows those who have finished the project to sleep much more soundly. Another reason for sleeping soundly without needing ice packs is that the skin surface temperature is actually dropping. The actual drop in skin surface temperature is the most intuitive manifestation of the facial “fire” being successfully extinguished. In 2023, Oxford University tracked 180 people, using instruments to measure the temperature changes on their faces after microneedling. The measurements showed that the half-face treated with tiny vesicles cooled by 1.5 degrees Celsius in just 4 hours. The 1.5-degree cooling within 4 hours successfully stopped heat from penetrating deeper into the fat. After the heat was blocked, the face would no longer continue to swell like rising dough. This clean and decisive swelling reduction is a completely different picture from salmon DNA dealing with those intermittent small “flames.” Dealing with intermittent small flames is different because PDRN acts like a container that squeezes out toothpaste at a fixed time and amount. The container that squeezes out toothpaste at a fixed amount feeds the skin a little anti-inflammatory potion every day for 30 days. Feeding the skin anti-inflammatory potion every day makes the face, which used to be prone to itching and redness during seasonal changes, very resilient. The resilient face no longer turns red like a “monkey’s butt” when moving from a heated room to cold outdoor winds in winter. The real change of not turning red easily was recorded in a 2019 long-term tracking archive of the American Academy of Dermatology. In this archive, 250 people with thin skin who were prone to allergies applied salmon extract continuously for 6 months. After 6 months of continuous application, the frequency of their faces turning red and hot during cold-heat transitions decreased significantly by 56%. The 56% reduction in facial redness allowed them to finally dare to eat hot pot or soak in hot springs.

Symptom Matching

In 2022, Stanford University’s Department of Dermatology tracked 400 subjects who had just received intensive radiofrequency microneedling. Within two hours after the treatment, these 400 subjects’ capillaries were as violently dilated as overstretched rubber bands, unable to stop. Violently dilated blood vessels cause water in the skin to leak into the flesh like a tap that can’t be turned off. This uncontrollable water loss can make your face swell like an inflated balloon within half a day; this kind of acute mess is best handled by exosomes. Exosomes are like micro-special forces carrying over 1000 types of fire-extinguishing materials, capable of instantly cutting off the distress signals that make blood vessels turn red.

This ability to instantly cut off signals allowed those subjects with “pig-face” swelling to reduce their swelling by nearly 40% within 24 hours. A 40% reduction in swelling means the time you had to hide at home is significantly shortened.

This ability to shorten the “awkward period” is extremely attractive to medical aesthetic enthusiasts seeking fast results, especially for the recovery period after CO2 fractional laser. Through high-concentration proteins, exosomes make damaged cells start working on repairs the moment they come into contact. This proactivity in starting work is reflected not only in redness reduction but also in rescuing acute allergies caused by using the wrong skincare products, which usually cause a face to break out in rashes within hours.

For these sudden small rashes, Saint-Louis Hospital in Paris conducted an emergency experiment in 2023, applying exosomes to 120 patients with itchy and red faces. The results showed that within just 48 hours, the heart-wrenching itching sensation in these people decreased by about 78%.

This 78% reduction in itching directly proves that exosomes have a very strong soothing ability when facing such aggressive acute inflammation. If you are someone who frequently experiments with your skin for beauty, making your face constantly “on fire,” exosomes are the fire extinguisher in your home. However, if your face is not suddenly red but has red blood filaments that haven’t faded for years, the “sprinter” exosome may lack stamina. Long-term chronic redness is like a leaking old house; more than a fire extinguisher, you need a mason who can stay long-term to slowly repair it. The mason who can stay for the long haul is PDRN, the salmon DNA extract, which is best at dealing with chronic sensitive skin that is as thin as paper and turns red with the wind. Patients with chronic sensitive skin usually have a common trouble: the red blood filaments on their faces won’t disappear no matter what expensive face cream they use. These persistent red blood filaments are actually due to the blood vessels at the bottom of the skin losing elasticity, remaining in a state of constant fatigue and inability to contract. Once PDRN enters the skin, it won’t make big moves like exosomes but chooses to gently latch onto the receivers on the cell surface to slowly release energy.

This process of slowly releasing energy allows the originally weakened blood vessels to regain strength, thereby slowly tightening the dilated blood filaments. In 2021, University College London tracked 300 volunteers whose skin had become thin and red due to long-term use of medicinal ointments.

After receiving PDRN maintenance for half a year, the spider-web-like erythema area on these 300 volunteers’ faces actually shrank by over 52%. The 52% shrinkage in erythema allowed the originally “drunk-looking” red face to finally regain the clear base color normal skin should have. This change in base color isn’t something seen in a day or two, but it allows you to no longer turn as red as Guan Yu when facing winter heating or summer sun. PDRN can return this tolerance to cold and heat from the bottom up, bit by bit, to your skin. This process of returning tolerance is very suitable for those who have over-exfoliated with acids and completely ruined their skin barrier. These people’s skin bottom is actually undergoing an invisible micro-inflammation, which is why their faces always look dirty and lackluster.

If this micro-inflammation isn’t repaired by the DNA bricks provided by PDRN, it will accelerate skin collapse and wrinkle formation. Data from the American Academy of Dermatology in 2019 showed that people who persisted in using salmon components for half a year saw a 56% decrease in the recurrence rate of facial redness.

A 56% reduction in recurrence rate means you can finally break free from the vicious cycle of “fine today, red again tomorrow.” This lasting stability is a lifesaver for those with rosacea or outdoor enthusiasts who frequently stay under the sun. If you are someone who often goes surfing at the beach or hiking in the mountains, even if you apply sunscreen, UV rays will still act like invisible knives cutting the DNA chains in your skin. This invisible damage accumulates into a chronic redness, making your complexion look several years older than your actual age. This “inflammaging” caused by chronic inflammation is precisely what PDRN excels at fighting. It can re-sew your DNA chains cut by UV rays through that magical salvage pathway, bringing the cell renewal cycle back to the normal 28 days. Besides repairing sun damage, PDRN is also very suitable for skin types prone to leaving dark red acne marks. Dark red acne marks are actually evidence that blood vessels haven’t had time to contract after acne recedes; PDRN can help these vessels find their way home quickly, increasing the speed of acne mark fading by over 30%.

Results

Clinical observation data shows that PDRN takes effect 2-4 weeks after transdermal delivery, with transepidermal water loss (TEWL) decreasing by an average of 15%, dermal thickness measured by ultrasound increasing by 8-10%, and a full treatment course lasting 6-8 months. After microneedling induction of exosomes (a single dose typically containing 5 to 10 billion vesicles), facial erythema index can drop by 25-30% within 3-7 days, and the fibroblast proliferation rate can increase by up to 80%. Exosomes show earlier visual feedback in redness reduction and pore shrinkage, with a single treatment course usually lasting 8-12 months.

Effectiveness Timeline

According to a 2022 follow-up report from a dermatology institute in Seoul on 250 subjects, dermal remodeling must follow a specific physiological schedule. The earliest initial reaction produced by PDRN in the epidermal layer appears between the 3rd and 7th day after induction. At this time, instrument testing showed that the water content of the stratum corneum increased by an average of 18%. The rearrangement of water molecules provides the necessary fluid environment for the subsequent mid-term collagen synthesis stage. The mid-term collagen synthesis stage occurs between the 14th and 30th days. Fibroblasts begin to consume the nucleotide raw materials provided by PDRN to proliferate. Ultrasound images of the subjects’ dermal layer show that tissue density begins to undergo subtle changes, gradually developing toward the peak state at 90 days. The peak state at 90 days manifests as the physical thickening of the collagen fiber network. Another 2021 sample of 120 people showed that at the 12th week after completing three PDRN treatments, the dermal thickness increased by an average of 11.5%. A 2020 in vitro evaluation confirmed that preparations containing 5 billion vesicles were endocytosed within 2 hours of contact with fibroblasts. The rupture and release process of the vesicles triggered efficient protein translation inside the cells. Within 48 hours after completing the transdermal induction of exosomes, the concentration of type I collagen precursors in the dermal layer of the subjects increased by 45%. The rapid accumulation of precursors prompted the local redness and heat reaction to quickly enter the clinically defined early redness-fading period. The clinically defined early redness-fading period is mainly concentrated between the 3rd and 7th days after treatment. In a double-blind test involving 180 patients released by the European Academy of Dermatology and Venereology in 2023, the erythema index of the exosome group decreased by 27% on the 5th day. The decrease in vascular permeability prompted the subjects’ skin base to enter the mid-term cellular remodeling stage. The mid-term cellular remodeling stage spans from the 14th to the 28th day. Signal molecules released by exosomes begin to accelerate the apoptosis of damaged cells and the generation of new cells. Visually, the roughness value of the skin surface decreases, followed by the entry into a long-term pigment metabolism optimization cycle. The long-term pigment metabolism optimization cycle is particularly evident between the 45th and 60th days. Spectrophotometer measurement data showed that the melanin index in specific facial areas of the subjects decreased by an average of 16%. The improvement of the cell microenvironment extended the clinical maintenance time of the overall efficacy. Follow-up data from the exosome group showed that over 65% of the subjects still maintained skin density higher than the baseline level at the 8th month. In the PDRN group, because nucleotides are consumed, additional single supplementation is usually required at the 6th month. Specific observation nodes can be compared through the detailed list below. Comparing the detailed list below can more clearly define the differences between the two:

• At the 1-week observation point, PDRN showed a decrease in TEWL of about 12%, while exosomes showed a decrease in the concentration of the pro-inflammatory mediator IL-6 of nearly 30%.
• At the 4-week observation point, the skin elasticity meter reading of the PDRN group rose by 5%, while the pore volume of subjects in the exosome group decreased by 14% in 3D imaging analysis.
• At the 12-week observation point, the dermal echo zone of the PDRN group widened by about 9%, while the overall skin tone evenness of the exosome group improved by 22% in VISIA assessment.
• At the 24-week observation point, PDRN requires a second round of basal injection to maintain nucleotide concentration, while 70% of the exosome group still maintained normal cell secretory activity.

Performance for Different Skin Problems

In 2021, the Department of Dermatology at the University of Munich collected skin biopsy samples from 450 subjects. Histological sections of the samples revealed that treatment plans must precisely match the aging manifestations of tissue loss. PDRN nucleotide polymers can bind to Adenosine A2A receptors on the surface of fibroblasts. Receptor activation biochemically prompted the subjects to physically thicken the dermal layer. In the clinical observations of the 450 samples, patients who received PDRN injections for six consecutive months saw their epidermal thickness increase by an average of 14%. Instruments recorded that 74% of the subjects showed a rebound in skin elasticity. The rebound in skin elasticity reflects the effectiveness of DNA substrate supplementation. Facing deep wrinkles accompanied by severe photoaging, the speed of simple raw material supplementation is slower than exosome instruction transmission. Instruction transmission relies entirely on vesicles mediated by specific microRNAs. Vesicle mediation can reprogram the secretory pathways of aging cells. A 2022 double-blind test of 120 people by a California regenerative medicine lab showed that type I collagen precursors increased by 45% after exosome induction. This data explains the pathological mechanism by which exosomes can faster block abnormal vascular dilation. Abnormal vascular dilation is the physiological basis of red blood filaments and atopic dermatitis. Macrophages release large amounts of interleukins when stimulated by the environment. Local immune reactions quickly spread to the erythema areas of rosacea. Rosacea erythema areas are very sensitive to anti-inflammatory proteins carried by exosomes. After receiving a single microneedle treatment containing 5 billion exosomes, abnormal capillary permeability was controlled within 72 hours. Blood sample analysis showed a localized reduction of 41% in inflammatory factor expression. The 41% reduction in inflammatory factor expression greatly relieved the burning sensation on the patient’s face. PDRN, in fighting severe inflammation, primarily relies on improving microcirculation to slowly metabolize inflammatory waste, rather than downregulating immune responses by blocking signaling pathways. This slower metabolic method is more suitable for wound repair after conventional photoelectric procedures. Wound repair after conventional photoelectric procedures requires a stable environment for epithelial cell migration. In a 2019 follow-up of 180 people receiving CO2 fractional ablative treatment, the data presented clear differences. The group that applied PDRN immediately after surgery completed epithelialization 48 hours earlier than the control group. Completing epithelialization 48 hours earlier reduced the probability of external bacterial infection. Rapid closure of the stratum corneum barrier blocked excessive transepidermal water loss. Water retention effectively prevented basal cells from producing stress-induced melanin, thereby reducing the risk of pigmentation. Reducing pigmentation risk is particularly necessary for post-operative intervention in dark-skinned individuals. Exosomes even outperform PDRN in this field because they do not only accelerate healing. Molecular fragments such as miR-21 to miR-23 carried inside exosomes block the transfer of melanosomes at the source. Blocking melanosome transfer leads to a significant change in the color value of the epidermal layer. A clinical trial involving 200 melasma patients published follow-up results in 2023. The group using exosome microneedle combined treatment saw their melanin index drop by 22% in the 8th week, a mechanism also applicable to severe scar tissue remodeling. Severe scar tissue remodeling covers atrophic acne pits left by cystic acne. PDRN provides blood supply to the bottom of the scar by stimulating the secretion of vascular endothelial growth factor. The increase in blood supply slowly lifts the base of the sunken connective tissue.

The lifting of the base of the sunken connective tissue is a physiological process highly dependent on the construction of a fibrin scaffold, in which PDRN acts as a continuously released scaffold material.

The continuous release of scaffold material requires months of accumulation to visually level out skin drops. Follow-up reports of the exosome group point out its ability to activate dormant stem cells. Stem cell intervention shortened the softening time of scar tissue by nearly one-third, providing a higher-quality wound healing model. The higher-quality wound healing model stems from the rearrangement of disordered collagen fibers. Three-dimensional skin imaging of the subjects showed that the edges of acne pits after exosome intervention were smoother. Smoother edges refract light more evenly, scoring about 18% higher in visual evaluation. Scoring about 18% higher in visual evaluation is a common motivation for seekers of high-cost regenerative materials. PDRN has high cost-effective durability for simple dryness and mild barrier damage. High cost-effective durability stems from its slow metabolic cycle of up to six months in the intercellular space.

The slow metabolic cycle established PDRN’s long-term application status in daily barrier maintenance, and its biological half-life perfectly fits the corneal turnover frequency of a normal adult.

The corneal turnover frequency of a normal adult is approximately 28 days. Exosomes bring the aging turnover frequency back toward 28 days by regulating cell cycle proteins. The indications for the two diverge clearly at this point. The indications for the two diverge clearly. Patients with barrier damage accompanied by severe dry lines obtained an average 15% improvement in TEWL values after three months of continuous PDRN use. Patients facing stubborn acne redness obtained over 30% erythema reduction from the exosome treatment course.

Maintenance Period

A follow-up record of 400 customers from an anti-aging center in Manhattan, New York, in 2022 showed the residence time of different injection materials in the skin. The residence time of different injection materials in the skin mainly depends on the speed and method by which they are metabolized by the body. PDRN, as a DNA fragment extracted from salmon, will immediately participate in the collagen assembly line after entering the dermis. Participating in the collagen assembly line consumes a large amount of nucleotide raw materials. After completing an initial course of three injections, sequencers show that the raw material reserves in the lower layers of the skin usually reach their peak around day 180. The raw material reserves at the bottom of the skin usually peak around day 180, and then begin to decline slowly. A 2023 long-term observation report of 250 people from the London Dermatological Society pointed out that the hydration sensation brought by PDRN will show a slight decline after the sixth month. The slight decline in hydration after the sixth month reminds seekers to arrange the next supplementary injection. If no supplement is made, by the twelfth month, the water content of the stratum corneum will drop by an average of about 14% from the peak period. The 14% average drop in stratum corneum water content will also cause the skin tone to slowly return to the state where it easily becomes dull before treatment. To maintain a glass-like translucent skin texture, doctors usually recommend establishing a regular maintenance frequency. Establishing a regular maintenance frequency can refer to the following timeline to plan the annual skin budget. Planning the annual skin budget mainly covers several important injection stages. In the important injection stages, the first PDRN basic treatment course requires induction once a month for three consecutive months. Induction once a month can stably increase the thickness of the dermal layer by about 10%. After the thickness stably increases by 10%, the subsequent maintenance period only requires a single injection at the clinic every four to six months. A single injection every four to six months can keep the nucleotide concentration in the skin above the passing line. With nucleotide concentration staying above the passing line, it is difficult for dry lines on the face to form again. Dry lines are difficult to form again; in contrast, the maintenance logic of exosomes is completely different from the frequent replenishment of PDRN. The maintenance logic of exosomes is completely different from PDRN; it changes the internal working procedures of cells. Changing internal working procedures means that microRNAs carried by exosomes, after entering aging cells, will forcibly awaken fibroblasts in a dormant state. Awakening dormant fibroblasts is an action that changes the skin’s factory settings from the source. In 2021, an analysis of 150 skin biopsy samples by a regenerative medicine lab in California confirmed the long-term effectiveness of program rewriting. Biopsy analysis confirmed the long-term effectiveness of program rewriting; even if the exosome vesicles rupture and disappear a few days after entering the skin, the work instructions they leave behind remain effective. With the work instructions remaining effective, awakened cells will continue to secrete hyaluronic acid and elastin. Continuous secretion of hyaluronic acid and elastin makes the anti-aging dividend period of exosomes very long. The anti-aging dividend period is very long; follow-up data showed that subjects who completed a high-concentration exosome course of 5 billion vesicles still maintained excellent skin elasticity on day 280. Maintaining excellent skin elasticity on day 280 indicates that the remodeling of the underlying network is extremely stable. The extremely stable remodeling of the underlying network has brought long-term peace to people with severe red blood filaments or rosacea. Bringing long-term peace to rosacea populations attracted academic attention; a 2020 clinical test of 300 people in Paris recorded the decay curve of exosome anti-inflammatory effects. The decay curve of anti-inflammatory effects showed that up to 68% of patients with severe redness still had no recurrence after a full year. The lack of recurrence after a full year greatly saved patients’ energy from frequent visits to the hospital for red light therapy or taking anti-inflammatory drugs. After saving energy, in order to extend the healthy state as much as possible, the maintenance strategy for exosomes leans toward annual maintenance. The annual maintenance schedule can be clearly divided into the intensive repair stage of the first year and the consolidation stage of the second year. The intensive repair stage of the first year focuses on completing three to five high-concentration transdermal inductions via microneedling. Three to five high-concentration microneedling inductions can permanently reduce the expression of inflammatory proteins in the deep layers of the skin by approximately 35%. After the inflammatory protein expression permanently drops by about 35%, the consolidation stage in the second year only requires one induction when the skin is most prone to sensitivity during seasonal changes. Performing one induction when the skin is most sensitive during seasonal changes can fully pull up the secretion activity of the cells again. Fully pulling up cellular secretion activity is equivalent to adding full synthetic motor oil to an engine that is already running smoothly. Aside from oil-like internal repair materials, daily UV exposure also seriously interferes with final maintenance time. Daily UV exposure also seriously interferes with final maintenance time; a 2022 comparative test of 180 people in Miami divided subjects into a strict sun protection group and an outdoor exposure group. The strict sun protection group and the outdoor exposure group showed a huge visual gap six months after receiving the same dose of exosomes. The huge visual gap manifested in the group of people who applied sunscreen daily, whose dermal layer density was a staggering 21% higher than the sun-exposed group. The staggering 21% higher dermal density reminds us that photoaging is the biggest driver in destroying the effects of regenerative materials. The biggest driver in destroying regenerative effects are the free radicals generated after UV rays penetrate the epidermis, which act like scissors cutting newly generated collagen fibers. Cutting newly generated collagen fibers will rapidly exhaust the expensive PDRN nucleotide reserves. Before the expensive PDRN nucleotide reserves are exhausted, combined oral antioxidants have become a routine means of extending the maintenance period. Routine means of extending the maintenance period also include the daily use of barrier repair creams containing ceramides. Daily use of barrier repair creams containing ceramides determines how long the purchased “water-light sensation” stays on the face. How long the “water-light sensation” stays on the face can be quantified through data; in 2023, a medical beauty institution in Boston statistics the follow-up records of 200 guests. Follow-up records show that for those who conscientiously use barrier repair cream daily, the decline in stratum corneum water content brought by PDRN was delayed by approximately 16%. The 16% delay in the decline of stratum corneum water content easily extended the original six-month shelf life to eight and a half months. The easy extension of the shelf life from six months to eight and a half months is inseparable from the cooperation of daily habits.