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avoid direct sunlight, strenuous exercise, makeup, washing your face with hot water, sauna and rubbing the injection site to reduce the extension of the recovery period and the loss of effect. Ultraviolet exposure can cause a 72% increase in pigmentation, and strenuous exercise will accelerate the metabolism of hyaluronic acid, wasting 15%-20% of the therapeutic effect.
Direct sunlight
98% of skin experts recommend avoiding UV exposure, especially in the first 7-14 days after treatment. At this time, the defense capacity of external damage is almost reduced to 0.35 times, while the defense capacity of normal skin is 1.0. A 30-minute sun exposure can cause the erythema index to rise to 150%, and the skin barrier repair cycle is extended by 2-3 times.
Studies have shown that the risk of pigmentation increases by 72% after UV exposure. A 2019 dermatology report pointed out that after the skin is injected with a water light needle, if it is exposed to moderate intensity ultraviolet rays (UV index 5-7) every day for 5 consecutive days, the probability of pigmentation is as high as 46%. It may also have a destructive effect on collagen synthesis in the dermis of the skin, and increase the cost by about 20%-30%.
In an experiment on skin barrier function in 2022, skin samples exposed to 35-40 degrees Celsius had a secretion level of inflammatory factors that was about 180% higher than at room temperature. With the combined effects of temperature and UV rays, your skin may take 3-4 weeks longer than normal to fully recover.
One hour of strong sunlight exposure can cause the skin to lose up to 250 ml of moisture. The price of each ml of product is about $150-200, and the lost effect is equivalent to a waste of about 10%-15% of the cost.
Glass can only block about 50% of UV rays, while long-wave UVA penetrates almost completely. Even on cloudy days, the UV index may still be as high as 3-4. An environmental science study shows that indoor UV exposure for more than 3 hours may extend the skin’s repair process by about 25%.
After the skin enhancer injection, she suffered local facial inflammation due to direct sunlight, and subsequently received up to 6 repair treatments, with an average cost of about $100 each. The activity of vitamin C in serums containing antioxidant ingredients will be reduced by 40%-60% under strong light. According to industry statistics, about 80% of global skin care products contain such antioxidants.
If your care product costs $50 per bottle, exposure to sunlight is equivalent to a waste of $20 of its effectiveness. In a survey of 1,000 patients, more than 65% chose not to receive follow-up care due to postoperative discomfort.
Vigorous exercise
A 2021 study of 500 skin treatment patients showed that more than 60% of patients engaged in vigorous exercise after surgery, which led to increased redness and bruising, and the recovery period was extended by an average of 2.5 days. Vigorous exercise can increase blood circulation by about 30%-50%.
During vigorous exercise, the core body temperature of the human body will increase by 1-2 degrees Celsius, and the amount of sweat can reach 800-1000 ml per hour. The degradation rate of hyaluronic acid in a high temperature environment will accelerate by 28%. If your injection material costs $200 per milliliter, premature metabolism may reduce the efficacy by 15%-20%, which is equivalent to a direct waste of $30-40 in costs.
An international skin care expert once pointed out that the probability of nodules after vigorous exercise increased from the normal 3% to 12%, and severe cases even required secondary repair, adding about 20%-30% additional costs.
When the human body sweats, the salt concentration of sweat is about 0.9%, which is equivalent to the concentration of physiological saline. Data show that 42% of patients will feel local tingling or burning sensation after a lot of sweating after injection, and 15% of them have obvious dry skin and desquamation.
An experiment found that the density of bacteria on the surface of gym equipment reached 800,000 per square centimeter. The combination of sweat and bacteria may cause infection, with an average cost of between $50-100.
Experimental data show that the surface temperature of the skin will rise rapidly to 38-39 degrees Celsius after strenuous exercise. In a resting state, these inflammatory factors take 24-48 hours to gradually return to normal. A strenuous exercise may extend the skin’s recovery process by more than 2 days.
A survey on facial care showed that 30% of skin allergies or infections were related to improper wiping, especially within 7 days after injection.
During strenuous exercise, the respiratory rate will rise from the normal 12-20 times per minute to 40-50 times. Laboratory data show that when oxidative stress levels increase by 50%, the time required for skin repair will be extended by 1.8 times.
Immediate makeup
Data show that 48% of patients put on makeup within 6 hours after treatment, and 35% of them reported varying degrees of skin irritation or infection.
The average diameter of microparticles such as silicone, titanium dioxide, and iron oxide is between 200-300 nanometers, while the average pore size of micro-wounds in the skin after injection may be as high as 600 nanometers. Studies have shown that when microparticles enter the dermis, local redness and swelling increase by 42%-56%.
A survey of 50 consumers found that more than 90% of makeup brushes carry 120,000 bacteria per square centimeter before cleaning. The risk of infection in injected skin is 3.7 times higher than that in normal skin. Infection may even require antibiotic treatment, and the average cost of treatment is between $80-150.
Data show that the incidence of allergic reactions to fragrance-containing cosmetics within 48 hours after treatment is about 23%.
A clinical observation found that 14% of people who put on makeup too early after treatment had mild nodules or depressions, which required additional repair treatments, adding 30%-50% additional costs.
According to the American Academy of Dermatology, 8% of patients who used chemical sunscreens within 6 hours of treatment reported stinging or burning. A clinical study pointed out that 82% of early infection cases were diagnosed after patients delayed seeing a doctor, which was often related to premature makeup.
Experimental data showed that in an environment above 30°C, the oxidation rate of liquid foundation will accelerate by 40%-60%, and the free radicals generated may cause secondary damage to the repair of the injection area. A 2020 dermatological study found that the friction of mineral cosmetic particles may cause a 25% increase in the rate of skin barrier damage in the injection area.
Research data show that after using makeup removers, the skin’s water loss rate increases by about 15%, and the full recovery time of the skin barrier function is extended by about 3 days.
Wash your face with hot water
According to a survey of 200 skin care patients, about 38% of patients used hot water to wash their faces within 24 hours after treatment, and as many as 52% of them reported increased facial swelling and allergic reactions. A study on the effects of hot water on the skin pointed out that at water temperatures above 40°C, the blood flow to the skin increased by 40%, which prolonged the skin recovery time by about 1.5 times.
Experimental data showed that when the water temperature reached 40°C, the oil layer of the skin would be quickly washed away, resulting in a loss of about 20% of water. According to a report in the Journal of Dermatology in 2019, after washing the face in hot water at a temperature of more than 45°C, the antibacterial barrier function of the skin decreased by about 25%.
Data showed that 16% of patients who used hot water to wash their faces had small cracks at the injection site or uneven skin surface.
After injection, the process of skin surface recovery usually takes 48 to 72 hours, and the stimulation of high temperature water will prolong this recovery period. Studies have shown that patients who used hot water to wash their faces the day after injections had their skin recover 1.3 times longer on average, and most people need to add 1-2 days of cold compresses or repair care to relieve redness and discomfort.
For areas where skin enhancers have just been injected, this change in blood flow may cause the degree of redness and swelling after injection to be 30%-40% higher than normal. When the skin temperature reaches above 40°C, the skin’s self-repair ability decreases by 18%. Data show that for every 5°C increase in water temperature, the skin’s pH value will increase by an average of 0.5 units.
Sauna and steam baths
Data show that within 48 hours after treatment, about 21% of patients who received skin enhancer injections participated in saunas or steam baths, and more than 65% of them reported varying degrees of redness, increased inflammation, or uneven treatment effects. Studies have shown that the high temperatures in saunas or steam baths (usually 70-90°C) can raise skin temperature to between 40-45°C, and increase water loss by 30% above normal.
More importantly, the high temperatures in saunas and steam baths speed up blood circulation and metabolism, which is not good for recovering skin. Data show that for every 10 minutes of exposure to a steam bath, blood flow to the skin increases by 15%-20%. Skin exposed to saunas and steam baths may swell 38%-50% more than normal in the first 48 hours after injection.
A survey of 100 injection patients showed that more than 27% of patients experienced skin burning, itching, and redness and swelling after participating in saunas and steam baths within 72 hours after treatment. Data show that in a high temperature environment, the pH value of the skin will be more acidic than normal, usually rising by 0.5-1 unit.
According to a clinical study on skin repair, within 24 hours after a sauna or steam bath, the efficiency of skin self-repair is reduced by 15%. Through clinical experiments monitoring skin recovery, it was found that patients who participated in saunas or steam baths had an average recovery period of 1.6 times longer than those who did not.
Rub the injection site
According to a study of 300 skin care patients, about 32% of patients rubbed the injection site after injection, and more than 40% of them experienced increased swelling and uneven skin at the injection site. Within the first 48 hours of rubbing the site, the blood flow to the skin increased by about 25% compared to normal.
A clinical experiment showed that within 48 hours after injection, if the injection site was rubbed, the probability of uneven distribution of the injection material increased by 55%.
Studies have shown that rubbing the injection site can increase the local temperature by about 2-3℃, and this temperature change has a significant stimulating effect on the skin area that has just been injected. Survey data shows that the probability of local infection increases by 18% after rubbing the injection site.
Dermatological studies have found that within 24 hours after injection, patients who rubbed the injection site had edema that lasted 30% longer than those who did not rub. Surveys show that about 15% of people experienced severe allergic reactions after rubbing the injection site.
A clinical study on skin recovery found that rubbing the injection site reduced the healing rate of micro-wounds on the skin surface by about 20%-30%. Especially within 48 hours after injection, the skin’s repair ability is not yet complete. Patients with higher skin sensitivity have a 40% increased risk of rubbing the injection site within 72 hours after injection.
Drinking and spicy food
Studies have shown that within 48 hours after injection, about 28% of patients choose to drink or consume spicy food, and more than 50% of them reported redness, allergies or obvious unevenness at the injection site. Data show that after alcohol intake, blood flow to the skin usually increases by 20%-30%, which will especially in the first 48 hours after the skin enhancer is injected. This accelerated blood flow will destroy the originally stable injection effect.
According to dermatological research, after spicy food intake, the temperature of the skin can rise by 2-3℃, and this temperature difference aggravates the sensitivity of the skin. Especially within the first 72 hours after injection, this external stimulation may delay the self-repair process of the skin.