GOURI is a carefully planned collagen treatment. Fully liquid PCL is distributed evenly through the dermis, forming a three-dimensional scaffold that supports your own collagen production. Fine lines soften while firmness and skin density build steadily.
When fine lines and loss of firmness are both concerns, I start with a close assessment of skin thickness.
Dr. Chang-Hwan Cho Dong-An Joongsim ClinicNumbing cream
Swelling, bruising and lumpiness usually settle naturally
Excluding numbing time
Collagen renewal
from within
for gradually fuller skin
GOURI is a PCL-based skin-remodeling treatment that stimulates collagen in the dermis. When reduced firmness and density affect fine lines, pores and texture together, we first assess the skin's thickness and structure, then distribute the injections evenly at the appropriate depth. The treatment plan is built around that assessment.
Dong-An Joongsim Clinic offers GOURI ampoules, the world's first liquid PCL collagen booster, as part of its collagen-remodeling program. The clinic has built a reputation in Korea for treatments that stimulate collagen renewal.
Firmness and volume improve gradually and steadily. Liquid PCL forms a three-dimensional scaffold in the dermis, supporting the skin's own collagen production.
Fine lines gradually soften. Fibroblasts use the scaffold as support to produce collagen, replenishing a thinned dermis.
Makes enlarged pores less noticeable. PCL spreads evenly through the dermis to improve density across a broad area and support the skin around pores.
Skin texture becomes smoother, even up close. Because the product is fully liquid rather than particulate, it spreads broadly instead of concentrating at a single point.
Thin skin gains substance and strength. As PCL gradually breaks down, continued collagen production steadily supports the skin's structure.
The change is subtle and natural-looking. Collagen develops within the skin rather than adding conspicuous fullness at the surface.
Results depend on how treatment is planned and performed. We take time with every patient. A doctor handles your consultation and performs your treatment personally.
Your doctor assesses skin thickness and structure before distributing the product evenly through the dermis. Dr. Chang-Hwan Cho lectured on collagen stimulators, including liquid PCL, at an international conference in Xi'an, China, in 2026.
Dr. Chang-Hwan Cho, Dr. Soyoun Koo and Dr. Jinhyung Lee attended GOURI ProLab and CareLab, sharing approaches to swelling, prolonged bruising and allergy-like reactions.
We discussed GOURI with a doctor from Germany's Young Aesthetics Clinic and shared treatment protocols based on Korean patient data.
My nasolabial folds look less noticeable
I tried GOURI because makeup was settling into my nasolabial folds and my face looked tired. The numbing injection stung, and there was a tight feeling afterward. The change wasn't immediate, but over time my skin became smoother and the folds looked less noticeable.
It feels naturally fuller
I chose GOURI because my skin looked dull and the lines when I smiled bothered me. The injections stung a little, and my skin was sensitive to touch at first. As time passed, it felt a little fuller and softer. The change looked natural.
My hollow-looking face feels firmer
Before GOURI, the consultation covered the procedure and what I might feel afterward. The numbing injections hurt more than I expected, but the actual treatment just stung a little. There was some tightness at first. Over time, my face, which had looked hollow, seemed noticeably firmer.
Makeup in my smile lines bothers me less
I tried GOURI for the folds that formed when I smiled and for my skin texture. At first, the injection sites felt tight and sensitive, so I waited to see how they settled. My skin gradually felt smoother and thicker, and makeup settling into my smile lines bothered me less than before.
Think of conventional PLLA or PDLLA as powdered milk mixed into water, and GOURI as milk that is already evenly blended.
| Type | Form | Distribution | Aim |
|---|---|---|---|
| Particulate PLLA or PDLLA | Particles suspended in water | Remains around the injection point | Volume at selected points |
| GOURI liquid PCL | Fully liquid | Spreads into a broad network | Remodeling across an area |
How does a liquid become a scaffold for collagen? PCL changes form within the skin after injection. A doctor who has lectured on liquid PCL selects the injection layer and amount according to your skin thickness.
The fully liquid formulation spreads evenly through the dermis without particles.
Body temperature and the skin's environment trigger a three-dimensional network to form.
Fibroblasts use this network as support to produce collagen.
As PCL gradually breaks down, the newly formed collagen structure remains stable.
Our approach
Dr. Chang-Hwan Cho was first author of a review in the Journal of Cosmetic Dermatology comparing the mechanisms of six collagen boosters, including liquid PCL.
Cho CH et al., Journal of Cosmetic Dermatology 2026;25:e71105
Compare injectables and thread lifts side by side. The right choice varies from person to person, so your doctor will help you decide at your consultation.
| Treatment | Results | Duration | Comfort | Recovery |
|---|---|---|---|---|
| GOURI | Gradual improvement | Lasts 6 months or more | Mild discomfort | No downtime |
| RADIESSE | Visible right away | Lasts 24 months or more | Mild discomfort | No downtime |
| Sculptra | Gradual improvement | Lasts 24 months or more | Mild discomfort | Usually settled by the next day |
| JUVÉLOOK | Gradual improvement | Lasts around 12 months | Mild discomfort | Usually settled by the next day |
| Re2O | Gradual improvement | Lasts 6 months or more | Mild discomfort | Usually settled by the next day |
From actors preparing for filming to patients planning a wedding or presentation, many people visit us ahead of an important date. Your doctor plans the timing and combination of treatments around your facial features and schedule.
If your event is tomorrow
This treatment has no downtime and can be performed close to an event, but results develop gradually. If your event is tomorrow, your doctor may combine it with a treatment that gives more immediate results.
If your event is a month away
We work backward from your event date to plan a course of treatment around GOURI. Our broad range of devices lets us choose a combination that suits your face.
The skin has become thinner and less dense, leaving it looking less supported.
The injected PCL begins forming a network.
Fine lines, firmness, density and texture improve little by little.
Your doctor handles both your consultation and treatment. A patient coordinator can help with pricing.
Your doctor examines the area you want to treat and discusses the changes you hope to see.
Your doctor assesses skin thickness and structure to map the injection area.
Your doctor discusses whether numbing cream or sedation is appropriate.
Liquid PCL is distributed evenly through the dermis.
After soothing care, we check your recovery before you go home.
Conference lectures and seminars with doctors from around the world.
Our doctors explain fine lines, thin skin and loss of firmness in clear, practical terms.
Fillers add volume immediately, but it is important to understand rare, serious risks such as vascular occlusion before treatment.
The doctors at Dong-An Joongsim Clinic
Depending on their ingredients, skin boosters add hydration, support the skin's structure or stimulate collagen production.
The doctors at Dong-An Joongsim Clinic
Whether a nasolabial fold needs filling or lifting depends on whether it comes mainly from volume loss or sagging.
The doctors at Dong-An Joongsim ClinicResults depend on how treatment is planned and performed. Check whether a doctor handles consultation and treatment, whether genuine equipment and products are used, and whether treatments can be combined to suit your face. We take time with every patient, with a doctor leading your consultation and performing treatment personally.
Although often called a skin booster, it differs from products that primarily add hydration. It is a PCL-based remodeling treatment that stimulates collagen in the dermis to rebuild the skin's structure.
It works differently from a filler, which adds volume at specific points. Fully liquid PCL spreads broadly through the dermis, forming a network that supports the skin's own collagen production. The aim is better density, firmness and fine lines rather than a visibly fuller, inflated appearance.
The change develops over time rather than as immediate fullness. Collagen is produced gradually over 4–8 weeks.
Yes. Because it is fully liquid rather than particulate, it spreads more evenly within the skin and reduces the risk of particles clustering.
Temporary swelling, bruising and lumpiness can occur but usually improve naturally. Our doctors have studied how to manage swelling, prolonged bruising and allergy-like reactions at GOURI CareLab as part of their approach to aftercare.
The price depends on the treatment area, amount used and number of sessions. Your doctor assesses skin thickness and structure, maps the injection area, then discusses the cost.
You can return to your routine immediately. Avoid vigorous massage, saunas and alcohol for about 10 days.
| Manufacturer | DEXLEVO |
|---|---|
| Ingredients | Liquid PCLPolycaprolactone |
| Technology | CESABP® TechnologyBased on globally patented technology |
| Certifications | FDA · CEFor the PCL ingredient |
We take time with every patient. Your doctor leads the consultation and performs the treatment, with a plan based on your facial features.
