GOURI

What is GOURI skin booster treatment?

GOURI is an injectable aesthetic treatment manufactured by the South Korean company DEXLEVO. Its core ingredient is polycaprolactone, a biodegradable medical polymer, formulated at a 21% concentration. Unlike many PCL-based products that suspend solid microspheres in a gel carrier, GOURI is supplied as a fully solubilized liquid, a formulation method the manufacturer refers to as CESABP Technology, or Collagenesis-Enabled Solubilized Active and Biodegradable Polymer Technology.

This liquid consistency is intended to allow the product to distribute more broadly through facial tissue after injection, rather than concentrating in a single area the way a conventional filler might. Once placed into the appropriate dermal or subdermal layer, GOURI is designed to stimulate fibroblast activity, which in turn supports the skin's own production of new collagen. This is a gradual biological process rather than an immediate volumizing effect, and results are understood to build over weeks and months as the polymer slowly biodegrades through hydrolysis, generally over a period of approximately six to twelve months.

Because of this mechanism, GOURI is often categorized differently from both hydrating skin boosters and dermal fillers. Traditional hydrating boosters typically rely on non-cross-linked hyaluronic acid or similar ingredients to support surface hydration. Hyaluronic acid fillers, by contrast, are generally used for immediate volume and contour correction. GOURI sits in a distinct category: a collagen-stimulating treatment focused on longer-term improvements in firmness, elasticity, and overall skin quality, rather than immediate volumizing change.

Who may benefit from GOURI treatment?

A GOURI treatment plan at Mason Clinic is designed individually after a skin assessment with Dr. Kim, but candidates commonly present with one or more of the following:

• Early or moderate signs of facial skin aging, such as fine lines or mild laxity

• A noticeable reduction in skin firmness or elasticity

• A preference for gradual, natural-looking improvement rather than immediate volumizing results

• Uneven or rough-feeling skin texture

• Thin or weakened-looking skin in areas such as the cheeks or under the eyes

• An interest in broad facial skin-quality treatment rather than targeted contour correction

• Realistic expectations that results develop progressively over time

• No plans for substantial volume replacement, which would typically call for a different treatment category

A medical consultation is required before treatment so that Dr. Kim can evaluate your facial anatomy, skin thickness, history of previous injectable treatments, allergies, and general health background. Certain conditions, including pregnancy or breastfeeding, active skin infection near the treatment area, active inflammatory skin disease, known hypersensitivity to the formulation, significant bleeding or clotting disorders, and a tendency toward excessive scarring, may mean treatment needs to be postponed or reconsidered. These factors are assessed individually and are not a substitute for a full consultation.

Meet the specialist: Dr. Kim Hyun-ju

Dr. Kim Hyun-ju
Dermatology Specialist, M.D.

Dr. Kim Hyun-ju is the dermatology specialist responsible for Mason Clinic's skin booster program, including its GOURI protocol. She graduated Magna Cum Laude from the Graduate School of Medicine at Kyung Hee University and has since served as director at Plus Hoo Clinic, Girin Plastic Surgery Clinic, and D.A. Plastic Surgery Clinic. Across these roles, she has built extensive experience working with a wide range of skin quality presentations and patient profiles. She also holds recognition as a designated Alltite key doctor.

Dr. Kim's approach to injectable anatomy and skin physiology directly shapes how she selects products, determines injection depth, and designs each patient's individualized protocol under the clinic's proprietary Mason Skin Booster framework. She personally conducts pre-treatment skin assessments and is available for direct, director-level consultation for patients who request it. Her stated care philosophy is patient-centered and evidence-based, built on the view that meaningful, lasting skin quality improvement depends on understanding each patient's individual skin biology rather than applying a single standardized solution.

Treatment areas and expected improvements

GOURI is currently recommended by its manufacturer primarily for facial application. At Mason Clinic, treatment planning with Dr. Kim may focus on the following areas, depending on individual assessment.

• Cheeks and midface: This broader central facial area is commonly treated to support gradual improvement in firmness and skin density, particularly where mild laxity has developed over time.

• Periorbital area: The skin around the eyes tends to be thinner and more prone to visible fine lines. Careful technique is used here given the delicacy of this region.

• Lower face: Treatment in this area may be considered to support overall firmness and a smoother-looking texture as part of a broader facial plan.

• Fine lines around the mouth: Localized treatment may be discussed for patients whose primary concern involves this specific area.

Improvements associated with GOURI are understood to include firmer-looking skin, improved elasticity, smoother texture, and a reduced appearance of fine lines. These changes typically begin to appear within approximately one to two weeks and continue to develop gradually over the following weeks and months, since the underlying mechanism relies on new collagen formation rather than an immediate physical effect. Individual results vary according to age, baseline skin condition, metabolism, injection technique, and the number of sessions performed, and no specific outcome or duration can be guaranteed for any individual patient.

Treatment process and timeline

A typical GOURI treatment at Mason Clinic generally follows these steps.

• Consultation: Dr. Kim reviews your skin quality, facial structure, treatment goals, prior injectable history, medical conditions, medications, and allergies.

• Skin assessment: A closer evaluation of firmness, elasticity, and texture helps determine whether GOURI is appropriate and which facial areas should be prioritized.

• Preparation: The skin is cleansed and disinfected, and a topical anesthetic or other pain-management method may be applied according to clinic protocol.

• Injection: GOURI is administered using a needle or cannula into a dermal or subdermal plane selected specifically for your anatomy. Injection technique, depth, and volume are determined individually rather than standardized.

• Immediate post-treatment check: The treating doctor checks for unusual swelling, skin-color changes, bleeding, or other immediate reactions before you leave the clinic.

• Follow-up timeline: Depending on your response, one treatment session may be sufficient, or one to two additional sessions spaced approximately four to six weeks apart may be considered for more pronounced concerns. The appropriate number of sessions is determined by Dr. Kim based on clinical response rather than fixed in advance.

Results, safety, and longevity

GOURI does not typically produce the same immediate contour change associated with conventional dermal fillers, since its effect depends on gradual collagen stimulation. The polymer generally biodegrades over approximately six to twelve months, though individual tissue response and the pace of new collagen formation can vary, so no fixed duration applies to every patient.

Common temporary side effects following injection may include swelling, redness, bruising, tenderness, injection-site discomfort, itching, warmth, or small injection marks. Initial swelling can occur within the first 72 hours, and in some patients, delayed swelling may appear one to two weeks after treatment. Less common but possible reactions associated with injectable PCL treatments include persistent swelling, prolonged bruising, firmness or nodules, inflammatory reactions, infection, granuloma formation, or vascular complications. Because GOURI is not a hyaluronic acid product, it does not have the same routine reversal option available for many HA fillers, which makes careful patient selection, sterile technique, and prompt recognition of any complication particularly important.

Patients should seek prompt medical assessment if they experience severe or worsening pain, unusual whitening or darkening of the skin, rapidly worsening swelling, visual changes, or neurological symptoms such as weakness or difficulty speaking after treatment. Treatment at Mason Clinic is performed only by licensed, appropriately trained medical staff under Dr. Kim's oversight, and results are always presented as variable rather than guaranteed.

Why choose Mason Clinic for GOURI treatment

Mason Clinic's skin booster program is structured around individualized protocol design rather than a one-size-fits-all injection routine. Every GOURI treatment plan begins with a personal skin assessment conducted by Dr. Kim, whose background across multiple clinical director roles has given her direct experience with a wide variety of skin conditions and patient needs. Rather than applying a fixed formula, she adjusts injection depth, technique, and treatment area based on what she observes in each patient's skin.

Patients considering treatment can also request a director-level consultation directly with Dr. Kim, allowing for a more detailed discussion of expectations, technique, and realistic outcomes before any procedure is scheduled. This individualized model reflects the clinic's broader approach: that lasting improvement in skin quality depends on understanding the biology of the skin in front of the doctor, not on a standardized injectable protocol.

Key differentiators include a proprietary Mason Skin Booster protocol built on individualized assessment, direct access to director-level consultation with a specialist trained through a Magna Cum Laude medical program, multi-clinic directorial experience across a broad range of skin conditions, and a treatment philosophy grounded in evidence-based, patient-specific planning rather than fixed formulas. Mason Clinic is also positioned to accommodate international patients seeking skin booster treatment in Korea, with consultation processes designed to support visitors coordinating travel and treatment scheduling.

Patient experiences

Patient A, mid-thirties, noticed gradual dullness and mild loss of firmness in the cheek area.

After a consultation with Dr. Kim, a GOURI treatment plan was designed focusing on the midface. Over the following weeks, she described her skin as feeling firmer and looking smoother, understanding that continued improvement was expected to develop gradually. Suggested image placement: a soft-focus close-up of the midface area, without identifying facial features, alongside a simple before-and-after style texture graphic.

Patient B, early forties, was concerned about fine lines around the eyes and mouth combined with a general sense of tired-looking skin.

Dr. Kim recommended a combination approach targeting the periorbital area and perioral lines across two sessions spaced several weeks apart. He reported a gradual improvement in skin texture and a reduced appearance of fine lines over the following months. Suggested image placement: an illustrative diagram of facial treatment zones rather than an actual patient photo, respecting anonymity.

These scenarios are illustrative composites reflecting commonly reported outcomes and are not guarantees of any specific individual result.

Book your GOURI consultation at Mason Clinic

If gradual, natural-looking improvement in skin firmness and texture is what you are looking for, a personal consultation with Dr. Kim Hyun-ju is the first step toward understanding whether GOURI is right for your skin. During your visit, Dr. Kim will assess your skin quality, discuss your goals in detail, and design a treatment plan specific to your anatomy and expectations, rather than applying a generic protocol. International patients are welcome to reach out in advance to coordinate consultation timing and treatment planning around their travel schedule. Contact Mason Clinic today to schedule your assessment, or reach out through the clinic's international patient coordination service for guidance on preparing for your visit. Every treatment decision will be made only after a thorough, individualized evaluation, with realistic expectations discussed openly before any procedure begins.

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