One of the most powerful collagen-stimulating treatments available. It rebuilds and thickens the skin discreetly and gradually, restoring its structure, volume and firmness. The effect is natural and develops over time. A physician-administered treatment in central Warsaw.
Poly-L-lactic acid is one of the most powerful collagen-stimulating treatments available. Its action is discreet — because it is gradual — rebuilding and thickening the skin while restoring its structure, volume and firmness. The final effect is very natural and subtle: sagging skin is gradually lifted, the cheeks and nasolabial folds are replenished, and the skin regains radiance and elasticity.
Poly-L-lactic acid has been used in medicine for over 30 years, including as a component of dissolvable surgical sutures and implants. It has a well-established safety profile, as it breaks down completely within the human body. More than 150,000 treatments using this substance have been performed since the late 1990s.
What makes this treatment unique is its discreet, gradual action — the effects appear over time, as the skin's own collagen renewal is naturally stimulated. Poly-L-lactic acid gradually, yet effectively and noticeably, restores skin firmness and elasticity, smoothing and toning it.
Poly-L-lactic acid is one of our treatments from the collagen-stimulator family — alongside Profhilo, Nucleofill and Sunekos, of which we have performed 515 in total.
Source: Versum and Booksy reports, as of 30 June 2026. Data matching is approximate (based on procedure name).
Poly-L-lactic acid gradually stimulates fibroblasts to produce your own collagen — it is your own skin that rebuilds its structure.
Unlike a filler, it does not provide volume „right away” — the result builds up over weeks as collagen synthesis progresses.
A gradual lift of sagging skin, replenishment of the cheeks and nasolabial folds, and a return of radiance and elasticity.
Poly-L-lactic acid breaks down completely in the body — leaving behind only newly produced, natural collagen of the patient's own.
Poly-L-lactic acid is used to add volume to thin, sagging skin and to lift and strengthen the lower part of the face — particularly when the following are needed:
We use this treatment for a single indication. Below we describe exactly what it does in this case.
Not sure which indication matches your situation? See All Indications or ask during a consultation.
Poly-L-lactic acid (PLLA) is one of the best-documented collagen biostimulators. The studies below relate to PLLA technology — the mechanism shared by poly-L-lactic-acid-based treatments.
A comparative study of biostimulators found that poly-L-lactic acid increases the biosynthesis of type I and III collagen — key proteins responsible for skin structure.
Study on PLLA/PDO biostimulators, 2024. PubMed Central →In cultured human skin fibroblasts, PLLA increased collagen gene expression and synthesis via the TGF-β/Smad signalling pathway.
In vitro study, 2023. PubMed →A study assessing the effect of HA and PLLA fillers on collagen synthesis confirmed PLLA's ability to induce neocollagenesis in in vitro and in vivo models.
Comparative study, 2020. PubMed →The cited studies relate to poly-L-lactic acid (PLLA) technology, not a specific product brand. The number of treatments and the pace of results are determined individually by the physician; outcomes may vary depending on skin condition.
This is a minimally invasive lifting treatment, performed by a physician and preceded by a detailed health interview. A local anaesthetic is applied immediately before the treatment. The product is injected deep under the skin in areas where volume loss has been identified. The treatment takes around 30–60 minutes, and the effects last up to 2 years. Patients can return to daily activities immediately afterwards; for a few days, mild discomfort, redness or swelling may occur at the injection site, which resolve on their own.
The physician rules out contraindications and plans the injection areas.
Local anaesthesia for treatment comfort.
Deep under the skin, in areas of volume loss.
Roughly every 6 weeks; the effect builds up and lasts up to 2 years.
Typically, 2–4 treatments are performed about 6 weeks apart, although the actual number depends on the patient's individual needs and expectations. Because the effect builds up gradually alongside the production of the patient's own collagen, the full result is assessed once the series is complete.
The treatment doesn't require downtime, but it's worth taking care of the treated areas in the first few days. Discomfort, redness or swelling may persist at the injection site for a few days — these are temporary reactions.
With poly-L-lactic acid, your physician may recommend gently massaging the treated areas — follow their instructions.
Skip the sauna, swimming pool and intense training for 1–2 days.
Use an SPF cream and avoid intense sun exposure.
Discomfort, redness or swelling usually pass within a few days.
The full effect comes from a series of 2–4 treatments; schedule your follow-up visits with your physician.
This is educational and informational material. Detailed recommendations are provided by your physician during your visit; effects and outcomes vary individually.
Authentic photos from our Velvet Skin Clinic locations in Warsaw (Świętokrzyska — City Centre, Niepodległości — Mokotów).

The price is for a single treatment; the full therapy usually involves 2–4 treatments about 6 weeks apart. Poly-L-lactic acid is administered by a physician. The therapy plan is set during your consultation.
When you want immediate filling combined with collagen stimulation.
ViewMesotherapy with ready-made type I collagen — regeneration, scars and stretch marks.
ViewA comprehensive skin-renewal therapy combining collagen stimulation.
View„Tissue stimulators are the best treatment. I recommend Velvet Skin Clinic, the best of the best" (translated from Polish)
Karolina Gołda · 2025Google review„A great treatment, but it matters who performs it. In the hands of Dr Ewelina, the results are amazing" (translated from Polish)
Iwona · 2025Booksy review„Tissue stimulators improved the oval shape of my face." (translated from Polish)
Maria Borowczyk · 2025Google reviewEach case is assessed individually by the physician during the health interview. The main contraindications are:
Poly-L-lactic acid is one of the most powerful collagen stimulators, used in medicine for over 30 years, including in surgical sutures and implants. It breaks down completely in the body while stimulating the skin to produce its own collagen — leaving behind only new, natural tissue.
A filler provides volume immediately, supplementing the tissue with the product. Poly-L-lactic acid works differently: it doesn't fill instantly, but gradually stimulates the skin to produce its own collagen. The effect is more natural and develops over weeks, providing a gradual lifting and rebuilding effect.
The effects appear gradually, as the skin produces new collagen — usually over several weeks after successive treatments. The full result is assessed once the series of 2–4 treatments is complete. The pace depends on the individual condition of the skin.
Typically, 2–4 treatments are performed about 6 weeks apart. The actual number depends on the patient's individual needs and expectations, as well as the initial condition of the skin. The physician sets the therapy plan during the consultation. The effect lasts up to 2 years.
A local anaesthetic is applied immediately before the treatment, so discomfort is minimal. For a few days after the treatment, redness, swelling or a feeling of discomfort may occur at the injection site — these are temporary reactions that resolve on their own.
The price of a single treatment is 1,400 zł. The full therapy usually involves 2–4 treatments, so the total cost depends on the plan agreed with your physician. You'll find the full price list on the pricing page, and you can book a consultation online or by phone.
Aesthetic medicine treatments at Velvet Skin Clinic are performed exclusively by qualified physicians — with relevant medical education, postgraduate studies in aesthetic medicine, and clinical experience. Every treatment is preceded by a consultation, during which the physician tailors the therapy to your needs, indications and natural facial proportions.




00-116 Warsaw · opposite the Palace of Culture and Science
Phone 500 53 30 30
The publications underpinning this treatment — with PMID identifiers and an assessment of evidence strength.