GOURI and Juvelook: how do they differ, and which skin does each suit?
GOURI and Juvelook are both called “collagen boosters”, so they sound like the same treatment. In fact the material and the way each behaves after injection are different. With both products in the clinic, here is how I choose.
The short answer
GOURI is particle-free liquid PCL, so it spreads in a sheet along the injected layer; Juvelook mixes PDLLA particles into hyaluronic acid, so it stays where it is placed and stimulates collagen there. So GOURI evens out texture and firmness across the whole face, while Juvelook, depending on particle size (20–65 µm), targets chosen areas from skin texture through to volume. No study compares the two directly, and neither has a reversing injection. At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700, we have GOURI and the full Juvelook line-up and choose by the shape of your concern.
How do the material and behaviour differ?
| Item | GOURI | Juvelook |
|---|---|---|
| Maker | Dexlevo | VAIM |
| Material | Liquid PCL 21%, no particles | PDLLA microspheres + hyaluronic acid |
| After injection | Spreads in a sheet along the layer | Stays where it is placed |
| Line-up | One product | i 20, Juvelook 24, Volume 40, G 65 µm |
| What decides the result | Which layer, divided into how many points | Which size, placed where |
| Right after | Raised by the injected fluid → settles in 1–2 days | Hyaluronic acid volume → fades over a few weeks |
Which do I consider first for which concern?
| Concern | Considered first | Why |
|---|---|---|
| Dull, rough texture across the whole face | GOURI | Evens out a wide area |
| Texture, pores or acne marks in particular areas | Juvelook Skin or i | Focuses on chosen areas |
| Localised hollowing such as nasolabial folds or temples | Juvelook Volume or G | Larger particles give support in deeper layers |
| Thin skin, worried about feeling granules | GOURI | No granules to clump |
If you remember “evening out a wide area” means GOURI, and “focusing on this area” means Juvelook, you will not go far wrong.
Which has more evidence?
Neither has much. GOURI has human data on 33 people in total, up to 6 months, and no human biopsy data yet. Research on Juvelook in Korea is growing, and in a study of 33 people that put the Juvelook family (PDLLA + hyaluronic acid) on one side of the nasolabial folds and PLLA on the other, improvement was similar up to 24 weeks.
No study has set GOURI directly against Juvelook. So I do not say “this one lasts longer”.
A reflection on Juvelook and Sculptra
Juvelook’s PDLLA and Sculptra’s PLLA are both polymers made from lactic acid. The difference is whether the molecules line up. PLLA is partly aligned like a crystal and breaks down slowly, while PDLLA has no alignment and produces a relatively gentler response.
The number I watch is the follow-up period. In a randomised trial of 208 people with nasolabial folds, PLLA and hyaluronic acid filler were similar up to 12 weeks, diverged after 24 weeks, and at 120 weeks stood at 55.56% vs 25.00%. The 33-person study comparing Juvelook and PLLA ended at 24 weeks. This means differences between stimulators may show over one to two years rather than a few months, and my reflection is that “similar” in a short study should not be read as “the same”.
Where does GOURI sit on this line? Because it has no particles and spreads, it is of a different kind from PLLA and PDLLA. It is more accurate to see it as a material aimed at the quality of the whole surface rather than at long-lasting volume.
What should I watch for with both?
- There is no reversing injection — start conservatively and add later
- Palpable lumps are usually a matter of layer and distribution — if it becomes red, painful and swollen beyond 2 weeks, contact us straight away
- Fullness right after treatment is not the result — assessment comes after 2–3 months
- If the cheeks are already hollow, I talk about dissolvable hyaluronic acid filler first
GOURI vs Juvelook: frequently asked questions
Which is better, GOURI or Juvelook?
No study has compared them directly. For texture across the whole face I consider GOURI first; to focus on chosen areas or when some local volume is needed, Juvelook.
Is Juvelook the same as Sculptra?
They belong to the same lactic acid polymer family, but Juvelook is PDLLA with added hyaluronic acid, and Sculptra is PLLA. PLLA breaks down more slowly and is often used for volume.
Can GOURI be felt as granules?
It is a particle-free liquid, so there are no granules to clump. However, if it pools in one layer a lump can be felt, so the layer and division into points matter.
Where can I get a GOURI or Juvelook consultation in Daegu?
At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700. Weekdays 11:00–19:00, Saturday 10:00–16:00, closed Sundays and public holidays.
Read next
Product pages
Who wrote this
Written and reviewed by Lee Chi-Hak, MD, director of Miso Clinic, Daegu. The treatment standards and injection design set out here are the ones we use in practice.
| Medical director | Lee Chi-Hak, MD |
|---|---|
| Address | 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu, South Korea · Exit 1, Kyungpook National University Hospital Station |
| Phone | +82-53-428-2700 |
| Hours | Weekdays 11:00–19:00 (lunch 13:00–14:00) / Saturday 10:00–16:00 (no lunch break) / Closed Sundays and public holidays |
| Columns | All clinical columns |
| Reference library | All booster and device references |
References
- GOURI data — Miso Clinic /gouri/, GOURI mechanism (gouri-mechanism), timeline (gouri-timeline), sessions (gouri-sessions): Dexlevo, particle-free liquid PCL, human data 33 people in total, up to 6 months (30-person pilot, Ponzo M et al., Plast Reconstr Surg Glob Open 2025, PMID 41210393, + 3 case reports), no human biopsy data, rats (40, 6 weeks) showed increased dermal thickness and type I collagen. Manufacturer FAQ: 1 session recommended + optional 1–2 more (4–6 weeks apart).
- Juvelook data — Miso Clinic Juvelook PDLLA (juvelook-pdlla), particle size (daegu-juvelook-particle-size): VAIM, PDLLA microspheres + hyaluronic acid, manufacturer mean particle size i 20, Juvelook 24, Volume 40, G 65 µm; approved indication “temporary improvement of adult facial wrinkles through physical restoration”. PDLLA+HA vs PLLA, nasolabial folds, 33 people, split-face, similar at 24 weeks (PMID 41532837).
- Sculptra data — Miso Clinic Sculptra, Juvelook and Everwrinkle compared (daegu-sculptra-juvelook-everwrinkle), GOURI and Sculptra (gouri-vs-sculptra): Galderma PLLA, 367.5 mg per vial, US approval trial 233 people (up to 4 sessions, 3 weeks apart), nasolabial folds PLLA vs HA, 208 people, randomised, 120 weeks, 55.56% vs 25.00% (PMID 42594306).
- Korean medical advertising law — Korean Medical Service Act Article 56(2) (no treatment testimonials, no comparisons with other clinics, no superlatives). This is why this column carries no prices, reviews or before-and-after photos.
- Miso Clinic practice guidelines — GOURI: 1 session as standard, review at 4 weeks, extra sessions 4–6 weeks apart, assessment at 12 weeks; after treatment avoid sauna, strenuous exercise and alcohol for the first two days and take care for one week; make-up from the next day; for hollow cheeks, dissolvable hyaluronic acid filler is considered first; for Rituo, genuine product and human tissue labelling are checked before treatment.
Everything in this column is general information and does not replace medical diagnosis or treatment. Effects and side effects vary with individual skin condition, age and underlying illness, and the same result is not guaranteed for everyone. Any decision to proceed should be made in an in-person consultation with a physician.