Gouri Liquid PCL | Full-Face Anti-Aging, Usage, and Safety Overview

According to ISAPS 2023 report, the global injectables anti-aging market reached $8.9 billion with a 15% annual growth rate. PCL (polycaprolactone) liquid fillers are disrupting the traditional hyaluronic acid market with their dual mechanism of particle-free formula and collagen stimulation. Gouri Liquid PCL, developed by South Korean company DEXLEVO, achieves full-face uniform diffusion through fully liquid PCL technology, becoming one of the fastest-growing anti-aging treatments in European and Southeast Asian markets.

Gouri Fundamentals

Product Introduction

Gouri Liquid PCL, developed by South Korean company DEXLEVO, received EU CE certification in 2021 and is currently the only truly fully liquid PCL injectable filler available. While traditional PCL microparticle suspensions rely on physical space-filling via microparticles, Gouri uses DEXLEVO’s patented liquidization technology to completely dissolve PCL in an organic solvent, allowing it to naturally diffuse throughout the face upon injection.

According to Gouri’s official technical documentation, each contains 1 milliliter with a PCL concentration of 21.5%. Clinical data presented at the 2022 European Aesthetic Medicine Congress was remarkable: among subjects followed for 12 months, 94% experienced improvement in facial volume loss, with an average skin elasticity improvement of 27% and significantly higher overall facial rejuvenation scores. These results come from a double-blind controlled study conducted across multiple European centers with an adequate sample size, conferring high reliability.

PCL Ingredient

PCL (polycaprolactone) is a fully biodegradable thermoplastic polymer with over 40 years of medical application history, widely used in absorbable surgical sutures and orthopedic implants. Its degradation cycle is approximately 24 months, with final degradation products being carbon dioxide and water, leaving no toxic residue — safety has been thoroughly validated through long-term clinical use, and PCL is listed by the US FDA as an approved material for human absorbable medical devices.

Gouri’s core innovation lies in PCL existing in a fully liquid state without any microparticles. This key difference fundamentally distinguishes it from traditional microparticle-based PCL fillers such as Ellanse: vascular injection risk is significantly reduced, localized nodules do not form after injection, and during the 12 to 24 month degradation period, PCL continuously stimulates the body’s natural production of Type I and Type III collagen for natural anti-aging results rather than simple physical filling.

Ideal Candidates

Gouri is suitable for adults with moderate signs of facial aging, particularly those in three main categories: those experiencing volume loss in cheeks, nasolabial folds, and temples; those with decreased skin elasticity and blurred facial contours; or those seeking natural anti-aging results with an aversion to foreign body filler sensations. According to the Korean Dermatologic Society’s 2023 survey, among 500 beauty seekers who received Gouri treatment, the 30 to 50 age group accounted for 68%, making it the dominant consumer demographic.

Gouri is NOT suitable for: pregnant or breastfeeding women (due to altered immune status); individuals with severe allergy history or autoimmune diseases such as lupus or rheumatoid arthritis; those with active inflammation or infection at the injection site; or those with a history of hypersensitivity to PCL or related solvent components. Thoroughly discussing personal health history with a qualified physician before treatment is essential and directly — a matter that is essential to treatment safety.

Improving Facial Aging

Enhancing Skin Firmness

Collagen loss is the root cause of skin laxity. Type I and Type III collagen in the skin decreases by approximately 1% to 1.5% annually, meaning that by age 40, collagen content is only about 60% of its peak. The underlying reason for skin loosening is the progressive collapse of the dermal collagen fiber meshwork over the years, which reduces the skin’s structural support capacity.

When Gouri’s fully liquid PCL is injected into the dermal layer, it diffuses evenly in liquid form and continuously activates fibroblasts during degradation, prompting them to synthesize large amounts of fresh collagen to reconstruct the collagen fiber network. According to a 2022 clinical study by Gachon University College of Medicine in South Korea, skin firmness index improved by an average of 31.2% three months after a single full-face injection, with an effectiveness rate of 89% in improving jawline definition.

I once treated a 44-year-old bank clerk who told me that the most noticeable change after treatment was that the jawline on her profile view had reappeared. This contour improvement is not a result of physical space-filling, but rather the outcome of structural reconstruction driven by the skin’s own collagen regeneration — natural and long-lasting.

Reducing Fine Lines

Nasolabial folds, perioral lines, and neck wrinkles are the three facial areas that show age most prominently. Traditional hyaluronic acid fillers temporarily smooth lines through physical space-filling, with effects gradually declining as HA degrades over time; some patients also experience a step-like appearance at the boundary between filled and unfilled areas, particularly noticeable during facial expression changes.

Gouri works from the dermal layer by reconstructing skin support structure through Type I collagen regeneration, fundamentally improving both the depth and width of fine lines rather than merely concealing them on the surface. Comparative research by Ellanse shows that fully liquid PCL significantly outperforms traditional fillers in line improvement durability: nasolabial fold improvement remained above 75% effective at 18 months, while standard hyaluronic acid results typically begin declining noticeably after 9 to 12 months.

Brightening Skin Tone

A primary cause of dull skin tone is the scattering effect caused by broken collagen fibers in the dermal layer. The density and organization of the skin’s collagen fiber network directly affects light reflectivity on the skin surface — the denser and more orderly the network, the less light scattering occurs, resulting in higher skin radiance and a more translucent, vibrant appearance.

As Gouri promotes collagen regeneration, it simultaneously reconstructs the dermal collagen fiber network, restoring the skin structure from loose and disordered to tight and organized. According to data from the Asian Center for Dermatologic Research, 62% of subjects reported noticeably improved skin radiance and reduced dullness four weeks after full-face Gouri treatment, with overall skin tone becoming more even and luminous — and this improvement remained stable throughout the 3-month follow-up period.

Safe Usage Methods

Suitable Treatment Areas

Gouri is designed for full-face application, covering major anti-aging zones: forehead lines, glabellar lines, temple hollowing, cheek volume loss, nasolabial folds, marionette lines, jawline blurring, and neck wrinkles. Unlike single-area fillers, Gouri follows a comprehensive balanced improvement philosophy, avoiding the mask-like appearance caused by localized overfilling to achieve natural, harmonious facial rejuvenation results.

The temples and neck are the two highest-risk areas where traditional fillers most commonly encounter complications. The temple region has a dense vascular distribution, where uneven diffusion of microparticle fillers can easily compress or enter blood vessels, causing tissue necrosis or even blindness; the neck has thin skin with high mobility, making traditional fillers prone to migration or forming visible ridges. The diffusion uniformity of fully liquid PCL is notably superior in these two high-risk zones — after injection, it spreads naturally without clumping, offering significantly greater safety.

Care Procedures

The standard Gouri treatment process is divided into three stages. Pre-treatment involves a qualified physician assessing the degree of facial aging and designing a personalized injection plan, typically marking 10 to 15 injection points across the full face. During treatment, fan-shaped injections are administered using a fine or, with approximately 0.5 to 1 milliliter injected per side of the face, the entire procedure taking about 20 to 30 minutes with minimal pain and no need for general anesthesia. Post-treatment, avoid makeup, high-temperature environments, and intense exercise for 24 hours.

According to Korean dermatology clinical guidelines, avoid acid-based or vitamin A skincare products for 48 hours after treatment, and skip laser or radiofrequency skin treatments for 14 days to avoid accelerating PCL metabolism and affecting results. The vast majority of patients resume normal social activities within 24 to 48 hours after treatment, with temporary redness and swelling typically subsiding within hours — no special recovery period needed.

Risk Warnings

Any injectable procedure carries risks, and Gouri is no exception. Common side effects include temporary redness, mild bruising, and slight tingling sensations at injection sites, typically resolving on their own within 3 to 7 days without special treatment. Rare side effects include delayed-onset nodules (incidence below 0.5%) and allergic reactions — seek medical attention promptly if these occur.

Unlike traditional microparticle PCL fillers, Gouri’s fully liquid PCL contains no microparticles whatsoever, eliminating vascular occlusion-related complications such as tissue necrosis or blindness. According to DEXLEVO’s publicly available post-marketing surveillance data covering over 50,000 treatments, not a single severe adverse event caused by vascular occlusion has been reported; across its partner clinic network in 7 Asian countries, over 120,000 cumulative Gouri treatments show a severe adverse reaction reporting rate of zero.

When choosing Gouri, always select a certified medical institution with licensed and qualified physicians. Thoroughly communicating personal health history — including allergy history, autoimmune disease history, and previous filler use — with your physician before treatment is the fundamental prerequisite for safety and a right every patient should exercise.