Biostimulators in London: Sculptra, Radiesse and Collagen Stimulation

Biostimulators are injectable treatments designed to improve skin quality, firmness and volume by encouraging your body to produce more of its own collagen.

What are Biostimulators?

Biostimulators are injectable treatments that work gradually. Instead of simply filling an area, they stimulate a regenerative response in the skin and deeper tissues.

This means results develop over weeks to months and are usually subtle, natural and progressive.

How are Biostimulators different from dermal filler?

Traditional hyaluronic acid filler is often used to provide immediate volume, structure or contour.

Biostimulators work differently. They encourage collagen production, meaning the result is less about instant filling and more about gradual tissue support, firmness and skin quality improvement.

What is Sculptra?

Sculptra is made from poly-L-lactic acid, or PLLA, a biocompatible material that stimulates collagen production over time.

It is often used when the goal is soft, progressive volume restoration and improvement in skin quality. Results are gradual, which makes Sculptra particularly suited to patients who want a natural-looking change.

Published cheek-wrinkle data showed a 71.6% responder rate at 12 months, with high patient satisfaction for radiance, firmness and natural-looking results.

What is Radiesse?

Radiesse is made from calcium hydroxylapatite, or CaHA, suspended in a gel carrier.

In its standard form, it can provide some immediate structure. When diluted or hyperdiluted, it is often used more for skin tightening, firmness and collagen stimulation.

Published data has shown Radiesse can stimulate collagen, elastin and vascular changes in the skin. One long-term study found that 40% of nasolabial folds assessed at least 30 months after treatment were still rated as improved or better.

How are Sculptra and Radiesse similar?

Both are collagen-stimulating injectables. Both can improve skin quality, firmness and contour. Both require careful patient selection, product knowledge and advanced injection technique.

They are not quick “one-size-fits-all” treatments. They work best as part of a personalised plan.

How are they different?

Sculptra is usually more gradual and is often chosen for soft, progressive volume restoration.

Radiesse can offer more immediate structural support when used undiluted, and more skin-tightening benefits when diluted or hyperdiluted.

The right choice depends on your anatomy, skin quality, treatment area and goals.

Can Biostimulators be used on the body?

Yes, in selected patients. Biostimulators can be used for body areas including hip dips, buttocks, cellulite-related dimpling and areas of mild laxity.

A split-body study using PLLA for hip dips found that after three monthly treatments, dermal thickness increased by 26.1% and the adipose layer increased by 27% on the treated side.

In a buttock cellulite study, diluted CaHA reduced visible dimples by 54% and dimple depth by 50.09% at week 14.

Biostimulators are not a replacement for surgery or fat transfer, but they can be a good option for patients wanting a lower-downtime, natural-looking approach.

How many sessions are needed?

Most patients need a course rather than a single appointment. Results build gradually over several months.

Maintenance depends on the product used, the treatment area and your goals.

Am I suitable?

A doctor-led consultation is essential. Dr Sana will assess your anatomy, skin quality, medical history and expectations before advising whether Sculptra, Radiesse or another treatment is most appropriate.

If you are interested in facial or body biostimulation, contact The Sana Clinic in Marylebone or Canary Wharf to book a consultation.

References

1. Fabi S, Hamilton T, LaTowsky B, et al. Effectiveness and Safety of Sculptra Poly-L-Lactic Acid Injectable Implant in the Correction of Cheek Wrinkles. Journal of Drugs in Dermatology. 2024;23(1):1297–1305.

2. Zubair R, Ishii L, Loyal J, Hartman N, Fabi SG. SPLASH: Split-Body Randomized Clinical Trial of Poly-L-Lactic Acid for Adipogenesis and Volumization of the Hip Dell. Dermatologic Surgery. 2024;50:1155–1162.

3. Bass LS, Smith S, Busso M, McClaren M. Calcium Hydroxylapatite (Radiesse) for Treatment of Nasolabial Folds: Long-Term Safety and Efficacy Results. Aesthetic Surgery Journal. 2010;30(2):235–238.

4. Aguilera SB, McCarthy A, Khalifian S, et al. The Role of Calcium Hydroxylapatite (Radiesse) as a Regenerative Aesthetic Treatment: A Narrative Review. Aesthetic Surgery Journal. 2023;43(10):1063–1090.

5. Durairaj K, Baker O, Yambao M, Linnemann-Heath J, Shirinyan A. Safety and Efficacy of Diluted Calcium Hydroxylapatite for the Treatment of Cellulite Dimpling on the Buttocks. Aesthetic Plastic Surgery. 2024;48:1797–1806.

6. Lorenc ZP, Black JM, Cheung JS, et al. Skin Tightening With Hyperdilute Calcium Hydroxylapatite: Dilution Practices and Practical Guidance for Clinical Practice. Aesthetic Surgery Journal. 2022;42(1):NP29–NP37.

7. Haddad A, Avelar L, Fabi SG, et al. Injectable Poly-L-Lactic Acid for Body Aesthetic Treatments: An International Consensus on Evidence Assessment and Practical Recommendations. Aesthetic Plastic Surgery. 2024.