By LIV Clinic · Medically reviewed by Dr. Narathai Vichienkalayarut, M.D. · Published September 1, 2026

A collagen stimulator that spreads across the whole face from just a few injection points — that is Gouri’s pitch.

Is Gouri available on Koh Samui? Gouri — the first fully liquid polycaprolactone (PCL) collagen biostimulator — is approved by Thailand’s FDA and offered at selected Thai clinics; availability on Koh Samui varies, and doctor-led clinics such as LIV Clinic offer comparable collagen-stimulating options.

What Gouri is

The first liquid PCL

Gouri, developed by DexLevo in Korea, is the first fully liquid polycaprolactone injectable — the same material used in dissolvable medical threads, but in liquid, microparticle-free form.

A collagen stimulator, not a filler

Unlike volumising fillers, it does not add artificial volume. It spreads through the dermis and stimulates your own collagen for skin quality, elasticity and tightening.

How it differs from other injectables

Versus hyaluronic acid boosters

HA products such as Profhilo attract water to hydrate skin. Gouri does not attract water — it prompts collagen and elastin production instead.

Versus Sculptra and Radiesse

Sculptra uses PLLA powder requiring reconstitution and Radiesse uses CaHA microparticles, while Gouri is fully liquid — which is why it spreads rather than sitting where placed.

What to expect

*Manufacturer guidance; your plan is confirmed at consultation.

What it treats

Gouri is designed for full-face skin quality:

• Overall skin laxity and loss of firmness
• Fine lines and early wrinkles
• Dull, tired-looking skin
• Skin elasticity and resilience
• Natural rejuvenation without added volume

Availability in Thailand and on Koh Samui

Approved in Thailand

Gouri has been approved by Thailand’s FDA and is offered at selected Thai clinics, more commonly in larger cities.

Ask before you travel

Availability on Koh Samui varies between clinics, so confirm directly before booking a trip around it.

Alternatives on the island

Comparable collagen stimulation

LIV Clinic offers biostimulator treatments and skin boosters that stimulate collagen, plus HIFU and radiofrequency for laxity.

Choosing by concern, not brand

The right choice depends on whether your priority is skin quality, volume or lifting — see our guide to treatments that stimulate collagen.

Combining with other treatments

Spacing matters

Manufacturer guidance suggests Gouri can be combined with botulinum toxin and non-crosslinked skin boosters, with a one-month interval recommended before and after cross-linked HA fillers.

Doctor-planned sequencing

As with any combined plan, sequencing should be decided by your doctor — see our guide to combining injectable treatments.

Considering a PCL biostimulator

A sensible approach:

1. Have a consultation to clarify whether your concern is quality, volume or laxity.
2. Ask which collagen-stimulating products the clinic offers.
3. Confirm any product is genuine and registered in Thailand.
4. Understand that biostimulators cannot be dissolved.
5. Allow 1–3 months for collagen results to develop.
6. Plan maintenance every 6–12 months.

Collagen biostimulators at LIV Clinic Koh Samui

At LIV Clinic, Dr. Narathai offers doctor-led biostimulator treatments and will advise which collagen-stimulating option suits your skin. Book a consultation to discuss your options.

Frequently asked questions

Safety and consultation

Gouri is a medical procedure and, like any injectable or energy-based treatment, carries some risk — common temporary effects can include redness, swelling, bruising or tenderness, and less common reactions are possible. Results vary from person to person, and no specific outcome can be promised. This article is general information, not medical advice.

At LIV Clinic, every treatment begins with an in-person assessment by Dr. Narathai Vichienkalayarut, M.D., who reviews your skin, medical history and goals before recommending a personalized plan. Book a consultation to find out whether this treatment suits you.