Sculptra, Bellafill, and Radiesse are the three FDA-approved injectable biostimulators most commonly used in 2026. They all stimulate your own collagen — but the active ingredient, the duration, and the reversibility profile differ significantly.
This guide covers each product's mechanism, when to choose which, the safety profiles, and how to combine them.
Sculptra (poly-L-lactic acid, PLLA)
Microsphere PLLA dissolves over 18–24 months while stimulating gradual collagen synthesis.
- Best for: cheek/temple volume restoration, jawline definition
- Duration: ~2 years
- Reversibility: limited — but PLLA is biocompatible and integrates well
- Result timeline: gradual over 6 months
- Elyzea cost: ~US$280/vial
- Safety: long history of safe use; small palpable nodules possible at injection sites
Bellafill (PMMA microspheres in collagen)
Permanent biostimulator. PMMA microspheres remain in tissue indefinitely while bovine collagen vehicle dissolves.
- Best for: deep nasolabial folds, acne scars in patients sure of permanent decision
- Duration: 5+ years (permanent)
- Reversibility: surgical only
- Result timeline: immediate (volume) plus collagen response over months
- Cost: US$1,000-$1,500 per syringe
Generally NOT offered at Elyzea due to permanence — patients flying for one-time correction may pursue, but reversible options are usually preferred. The permanence is its primary risk profile.
Radiesse (calcium hydroxylapatite, CaHA)
Hybrid filler-biostimulator. Immediate volume from CaHA microspheres, plus collagen response over months.
- Best for: jawline definition, hand rejuvenation, mid-face
- Duration: 12–18 months
- Reversibility: limited (no specific dissolver, but tissue remodeling is gradual)
- Result timeline: immediate (volume) plus collagen build at 3-6 months
- Elyzea cost: ~US$914/syringe
- Safety: well-tolerated; nodule risk at superficial placement
Risk vs. reward
Sculptra and Radiesse are reasonable defaults for most patients. Bellafill is high-reward (no maintenance) but high-risk if injected suboptimally — the permanence means complications are also permanent.
Most board-certified injectors prefer to start with reversible HA filler before any biostimulator, allowing the patient to experience the volume before committing to less-reversible product.
Cost summary
| Product | US per unit | Elyzea |
|---|---|---|
| Sculptra (per vial) | $800–$1,500 | ~US$280 |
| Bellafill (per syringe) | $1,000–$1,500 | n/a (not offered) |
| Radiesse (per syringe) | $700–$1,200 | ~US$914 |
When to choose Sculptra
Best when:
- Volume restoration over months is the goal (gradual change)
- Patient values reversible-ish treatment (limited but possible)
- Cheeks, temples, jawline are the primary indications
- Patient can be patient — full result takes 6 months
When to choose Radiesse
Best when:
- Immediate volume + collagen response are both wanted
- Jawline definition or hand rejuvenation are the goals
- Patient wants visible result faster than Sculptra timeline
When (rarely) to consider Bellafill
Limited indications:
- Stable, well-defined deep nasolabial folds
- Specific acne scars where permanence is desired
- Patient has clear, unwavering decision (not influenced by trends)
For most patients, reversible options are safer. Bellafill complications are also permanent.
Frequently asked questions
Can I combine biostimulators?
Yes. Sculptra (deep volume) + Radiesse (immediate lift) is a common pattern. Bellafill rarely combined due to permanence concerns.
Are biostimulators safe long-term?
Sculptra and Radiesse: yes. Bellafill: long-term complications harder to manage due to permanence.
What if I gain or lose weight?
Sculptra and Radiesse adjust naturally with the face. Bellafill doesn't and may look out of place if facial structure changes significantly.
Can I have these during pregnancy?
No. All contraindicated.
Is there a test for allergic reaction?
Bellafill requires bovine collagen test 4 weeks pre-treatment. Sculptra and Radiesse don't.
Will I see immediate results from Sculptra?
No. Sculptra's slow timeline is its defining feature. Detailed timeline.
Which is best for hand rejuvenation?
Hyperdiluted Radiesse is the gold standard for hands.
Bottom line
Sculptra for gradual volume restoration. Radiesse for immediate lift + collagen. Bellafill rarely the right answer due to permanence. Lima offers Sculptra and Radiesse at meaningful cost savings; for combined biostimulator + filler protocols, the trip math is overwhelming.