Biostimulatory Fillers — Sculptra, Radiesse, and Ellansé Compared

Last updated: 5 March 2026

What Are Biostimulatory Fillers?

Unlike traditional hyaluronic acid fillers that primarily provide volume through gel implantation, biostimulatory fillers work by stimulating the body’s own collagen production. These products provide gradual, natural-looking improvement that develops over weeks to months as new collagen is synthesised around the injected material.

Sculptra (Poly-L-Lactic Acid)

Sculptra consists of biocompatible, biodegradable poly-L-lactic acid microspheres suspended in sterile water. Originally developed for HIV-related lipoatrophy, it has become one of the most popular biostimulators in aesthetic practice. Results develop gradually over 2 to 3 months and can last up to 2 years. Multiple sessions (typically 2 to 3) are required for optimal outcomes.

Radiesse (Calcium Hydroxylapatite)

Radiesse contains calcium hydroxylapatite microspheres in a carboxymethylcellulose gel carrier. It provides immediate volumisation plus long-term biostimulation. The microspheres create a scaffold for new collagen formation whilst the gel carrier provides instant structural support. Results last 12 to 18 months.

Ellansé (Polycaprolactone)

Ellansé uses polycaprolactone microspheres in a carboxymethylcellulose carrier. Available in four longevity profiles (S, M, L, E), it offers practitioners flexibility in treatment planning. Duration ranges from 1 to 4 years depending on the variant selected. It provides both immediate volume and progressive collagen stimulation.

Comparison Summary

• Onset: Radiesse and Ellansé provide immediate volume; Sculptra is gradual
• Duration: Sculptra 2 years; Radiesse 12-18 months; Ellansé 1-4 years
• Reversibility: None are reversible with hyaluronidase
• Best for: All excel at facial volume restoration and skin quality improvement

Key Takeaways

• Biostimulators work by triggering your body’s own collagen production
• Results are gradual but long-lasting and natural-looking
• None can be dissolved with hyaluronidase — practitioner expertise is critical
• Choice depends on desired onset speed, duration, and treatment area

Frequently Asked Questions

Which biostimulator is best?

There is no single best option. Selection depends on individual goals, treatment area, desired longevity, and practitioner expertise. A thorough consultation will determine the most suitable product.

Are biostimulators safe?

All three products have extensive safety data and regulatory approval. However, because they cannot be dissolved, choosing an experienced practitioner is especially important.

How many sessions are needed?

Sculptra typically requires 2 to 3 sessions. Radiesse and Ellansé often achieve results in 1 to 2 sessions.

Medical Disclaimer: This article is for informational purposes only. Consult a qualified practitioner.