Juvelook (PDLLA): What It Is, What the Studies Show and Its Approval Status

What is Juvelook and what is it made of?

Juvelook is an injectable made by the Korean company VAIM, containing PDLLA particles mixed with hyaluronic acid. [1][4] PDLLA stands for poly-D,L-lactic acid, a polymer the body can break down and tolerate. [1] A maker image in a review shows round, porous particles 30 to 70 micrometres across, small enough to pass through a needle. [1]

The authors of a maker-funded study explain that PDLLA stimulates collagen production in a way similar to PLLA, while non-cross-linked hyaluronic acid makes the skin look hydrated right away. [2] This is the authors' description of the mechanism, not a confirmed result for every user.

PDLLA and PLLA trigger a mild inflammatory tissue response that raises type I collagen at the injection site. [3] That is why this group is called collagen stimulators. For the whole group, see [[collagen-stimulator-types-explained]].

What does Juvelook do, and what did the studies measure?

The studies measured skin elasticity, hydration and the severity of the nasolabial fold, but they had 20 to 40 participants and short follow-up, so long-term results are unknown. [1][2][5] The table below lists the studies that could be opened, with the limits of each.

Park and colleagues (2026) compared a PDLLA product with PLLA on the nasolabial fold, one on each side of the face, in 33 participants. The authors concluded that both sides improved significantly from baseline and about equally, so they called the PDLLA product non-inferior to PLLA. [2] The authors name their own limits: short follow-up and rating tools based on an assessor's opinion. [2]

No standard figure for how long the effect lasts was found in the studies opened. Park's study assessed up to week 24 from the start of injections. [2] A result measured on photographs or with an instrument does not mean every user sees the same thing.

The studies opened compared only with PLLA or saline, not with other skin boosters. [2][5] So they cannot say which product suits which skin. For a way to choose, read [[skin-booster-which-for-which-skin]].

How is PDLLA different from PLLA?

PDLLA and PLLA are both polylactic acid polymers, but the particles differ in shape: PDLLA is round and porous, while PLLA is irregular and dense. [2] The authors of Park's study, which a PDLLA maker funded, explain that PDLLA is amorphous, so it breaks down fairly quickly and from the core outward. [2]

That is the authors' explanation. It is not proof that PDLLA is safer or better than PLLA in real use. The one head-to-head study opened found similar results on the nasolabial fold. [2]

The US FDA lists PLLA among the materials it describes for dermal fillers and says its effects become more apparent over several weeks. [7] For PLLA in detail, read [[sculptra-plla-explained]].

What are the cautions with Juvelook? Lumps and blood vessel risk

The main cautions are lumps under the skin that hyaluronidase does not dissolve and that are hard to treat, plus a rare but serious risk if product enters a blood vessel by accident. [3][4][6] A 2024 review lists the complications of PDLLA as granulomas (firm, red lumps from the body's reaction), non-inflammatory lumps from uneven spread of the product, and movement of the product. [1]

A 2025 guideline on managing these lumps explains that they usually appear within several months of injection, from product that piles up or spreads unevenly. Unlike lumps from hyaluronic acid fillers, which hyaluronidase can dissolve, PDLLA lumps do not respond to simple enzyme treatment and respond poorly to steroids. [3] Park's study gives the usual timing for polylactic acid products as about 1 to 2 months for lumps and much later, about 6 to 24 months, for granulomas. [2]

Treating a lump has several levels, from non-invasive methods up to surgery if it does not go away. [3] That is a doctor's job; do not try to treat it yourself from internet advice.

A rare but serious risk of any dermal filler is accidental injection into a blood vessel. The US FDA says this can cause tissue death, vision problems including blindness, or stroke. [6] This is information for dermal fillers in general, not only Juvelook.

A team led by a doctor from Ramathibodi Hospital injected Juvelook into the ear artery of 112 rabbits. At one injected volume blood flow was briefly blocked and returned on its own within 5 minutes, and no skin death was seen. [4] The first author is a medical advisor to VAIM. [4] Animal results do not confirm safety in people.

The usual effects after a dermal filler, per the FDA, are bruising, redness, swelling, pain and itching. [6] If you have severe pain, skin colour change, an open sore or a change in vision, contact the doctor who injected you at once.

Is Juvelook approved? The status that can be checked

In the official documents that could be opened, there is no evidence that Juvelook is approved by the US FDA or registered with the Thai FDA, so ask for the registration number and check it yourself. [5][7][8] The information in this section was checked on 12 October 2026.

United States: the FDA page on dermal fillers describes four materials: hyaluronic acid, calcium hydroxylapatite, PLLA and PMMA. PDLLA is not among them. [7] That page says it was last updated in 2020 and tells readers to search the FDA approval database, so recheck the current database. [7]

Europe: the Ajou University trial record says Juvelook received CE approval in Europe in 2020. [5] That statement comes from the researcher, not from a regulator's document.

South Korea and Thailand: no official document from the Korean regulator (MFDS) or the Thai FDA that confirms Juvelook's status could be opened, so this article does not say whether it is approved. In its warning about exosomes the Thai FDA advised the public to check the product registration number and the advertising permit number, and to call hotline 1556 for side effects. [8] If a clinic says Juvelook has passed the Thai FDA, ask to see the registration number and check it with the Thai FDA yourself.

What should you ask the doctor about Juvelook before deciding?

Ask about the exact product, its registration number, the doctor's experience, and the plan if a lump or other problem appears; injections must be done by a licensed doctor. [6] The US FDA advises choosing a licensed provider trained in dermal fillers and never injecting dermal fillers yourself. [6]

The list below is a starting point. The right answers depend on your skin, your health history and the product the clinic actually uses.

• Which exact product is used? Ask to see the box, the label and the registration number. [8]
• How has the doctor managed lumps under the skin after PDLLA products, and does the clinic book follow-up visits? [3]
• Do your allergies, raised scars or earlier filler treatment matter, since these studies excluded people with such features? [2]
• Which symptoms mean you should call the clinic at once, such as severe pain, skin colour change, an open sore or a change in vision? [6]
• How is the result measured, and when does the clinic assess it?