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2026.08.11
What Is Gouri? An Easy-to-Understand Explanation of Its Expected Effects, Benefits, and Drawbacks
With deep medical insight cultivated as an internal medicine specialist, I bridge aesthetic surgery, dermatology, and internal medicine. Having spent my childhood in China, I communicate fluently in Japanese, Chinese, English, and Korean. Possessing an international perspective—evidenced by invitations to present at overseas conferences—I actively promote techniques as a Key Opinion Leader (KOL) for GOURI and REJURAN®. My specialty procedures include double eyelid surgery, skin-nurturing boosters, and body hyaluronic acid treatments. My approach leverages the holistic understanding of the body cultivated through internal medicine to guide patients toward natural, healthy beauty.
Gouri is used not only for sagging skin and loss of firmness in the face, but also for those concerned about wrinkles and the texture of the backs of their hands, where signs of aging are particularly noticeable.
Many people probably have questions like, “How is it different from hyaluronic acid?” and “How does it change the skin?”
In this article, a doctor from BIANCA CLINIC explains how Gouri works, its effects, benefits, and precautions.
What kind of treatment is Gouri?
Gouri is an injectable treatment that uses liquid PCL to support collagen production within the skin, helping to restore firmness, elasticity, and smoothness to the face and the backs of the hands.
Collagen Booster Using Liquid PCL
GOURI is the world's first liquid-form PCL injectable formulation. PCL is a biodegradable polymer called polycaprolactone, and it is also one of the materials used in thread lifts.
When Gouri is injected into the skin, it supports collagen production by stimulating fibroblasts. It is not primarily intended to directly fill in wrinkles, but rather is a skin booster that works by gradually improving the skin’s thickness and elasticity.
What Is a Skin Booster? Gouli’s Position Among Skin-Nourishing Injections
"Skin boosters," also known as "skin-rejuvenating injections," is a general term for treatments that involve injecting active ingredients into the skin to improve skin texture. The ingredients and specific concerns each formulation addresses vary; some help replenish moisture, others support collagen production, and still others target volume loss.
Gouri is characterized by the fact that liquid PCL diffuses over a relatively wide area and supports collagen production. Unlike hyaluronic acid, its primary purpose is not to add volume to specific areas, but rather to provide natural firmness and elasticity to the skin as a whole, such as on the face and the backs of the hands.
It can be injected not only into the face but also into the backs of the hands.
For the face, treatments for the forehead, under the eyes, cheeks, and around the mouth are typically considered. In addition, it can be used on areas where the effects of aging and UV exposure are easily visible, such as the neck, décolletage, elbows, and the backs of the hands.
The back of the hands, in particular, is an area where fine wrinkles and loss of firmness tend to be noticeable due to thin skin, dryness, and changes caused by UV exposure. If volume loss is not significant, it may be more appropriate to use Gouri to improve the skin’s natural firmness and texture rather than adding thickness with hyaluronic acid.
At Bianca Clinic, we assess the visibility of the bones and blood vessels on the back of the hand, the thinness of the skin, and the degree of volume loss, and we offer recommendations that may include other treatments, such as hyaluronic acid injections.
What kind of results can I expect from Gouri?
With Gouri, by supporting collagen production, you can expect to improve the firmness, elasticity, texture, and luster of your face and the backs of your hands, as well as reduce sagging.
The main changes you can expect from Gouri are as follows:
- Restores skin firmness and elasticity
- Improve skin texture and radiance
- Makes fine lines and sagging skin less noticeable
- Smooth out wrinkles and roughness on the back of your hands
Gouri itself does not contain collagen. It is a treatment that supports collagen production within the skin through stimulation by PCL. Therefore, rather than expecting dramatic changes immediately after the injection, it’s easier to understand if you think of it as a process where the skin’s thickness and elasticity gradually improve over time.
For the face, it is expected to be effective against sagging in the cheeks and around the mouth, fine lines around the eyes, and loss of firmness. Because the liquid formulation spreads easily, it is a good option when you want to improve the overall skin texture and firmness of your face, rather than just filling specific lines.
For the backs of the hands, the treatment focuses primarily on addressing loss of firmness, fine wrinkles, and a dry texture caused by years of UV exposure and friction. However, if bones and blood vessels are prominent due to a reduction in subcutaneous fat, Gouri treatment alone may not produce sufficient results. During the consultation, we place great emphasis on distinguishing between deterioration in skin quality and loss of volume.
Although the way the effects manifest and how long they last vary from person to person, changes gradually become apparent over the course of about one month and last for several months.
What are the pros and cons of Gouri?
While Gouri can help achieve natural-looking skin changes, there are risks such as swelling and bruising after the injection.
Benefits of Gouri
- It makes it easier to aim for natural, rather than abrupt, changes
- Can be used on large areas such as the face and the backs of the hands
- It addresses both skin texture and sagging
- It is liquid and spreads easily from the injection site
- In some cases, the procedure can be performed with fewer injection sites.
Unlike hyaluronic acid, Gouri is not a treatment that immediately adds significant volume to the injected area. Because it gradually restores firmness and elasticity while supporting collagen production within the skin, it is also an option for those who prefer a natural change that is not easily noticed by others.
Another key feature is that it can be used not only on the face but also on the backs of the hands, the neck, and the décolletage. In particular, it’s a great option if you want to refine the texture of the backs of your hands without adding too much volume.
Disadvantages and Risks of Gouri
- Redness, swelling, puffiness, hives
- Pain, itching, bruising
- Swelling or unevenness at the injection site
- Complications associated with injection procedures, such as infection
- Individual Differences in the Degree and Manifestation of Effects
Redness and swelling typically subside within a few hours to about two days, though the recovery process varies from person to person. If you experience unusual pain or worsening swelling, please contact the medical facility where you received treatment immediately.
In addition, depending on your condition—such as during pregnancy or while breastfeeding—you may not be able to receive treatment. Be sure to inform your doctor in advance of your medical history, any allergies, medications you are taking, and the condition of the skin in the treatment area.
When it comes to injection treatments, you may be concerned about the pain associated with the injections. At Bianca Clinic, in addition to using local anesthesia, we carefully consider the type of anesthesia and needles based on your preferences and condition to minimize pain and bruising.
Frequently Asked Questions
Before undergoing a Gouri treatment, it is important to confirm the injection volume, treatment frequency, duration of results, and post-treatment precautions.
Q. How long do the effects of Gouri last?
A. Results typically begin to appear about one month after the injection and are expected to last for several months. However, the timing of results and their duration may vary from person to person.
Q. What is the recommended frequency for Gouri treatments?
A. While it depends on the condition of your skin, we generally recommend three sessions every three months. After that, we will schedule a follow-up examination after about one year to determine whether you need to resume the treatments. Since everyone’s skin condition is different, please discuss your personalized skin care treatment plan during your consultation.
Q. When injecting Gouri into the back of the hand, what is the recommended dosage?
A. We generally consider 2 cc or more to be a good guideline for noticing a difference. However, since this varies depending on hand size, skin thickness, wrinkles, and the degree of volume loss, the doctor will adjust the amount needed after an examination.
Q. Is there anything I should be careful about after a Gouri treatment?
A. Please avoid rubbing the injection site vigorously or touching it more than necessary. If you are undergoing other skin treatments, you should generally wait about one month between treatments. If you experience severe swelling or pain, please contact the medical facility where you received the treatment.
Q. How do I choose a skin booster that’s right for my skin concerns?
A. The appropriate treatment varies depending on your specific concerns—such as loss of firmness, dryness, sagging, or enlarged pores—and their underlying causes. Our clinic offers a wide range of skin-rejuvenating injections. Please feel free to consult with us.
For those who want to naturally enhance the appearance of their hands. Choose Gouri to nurture your skin.
Gouri is a skin booster that supports collagen production with liquid PCL to improve firmness, elasticity, and skin texture on the face and the backs of the hands.
Gouri is especially effective at restoring a natural, youthful appearance to the signs of aging on the backs of your hands. If you’ve started to notice signs of aging on your hands, please schedule a consultation to discuss your options.
At BIANCA CLINIC, we address signs of aging not only on the face but also on the hands, neck, and décolletage.
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