"Which biostimulator is best?" — the honest answer is: there is no best. There is the right one. In my practice, the same 47-year-old patient may benefit from Sculptra while a 39-year-old with thin skin is better off with polynucleotides. Four substances, four very different logics. This article clears things up.
What distinguishes biostimulators from fillers
Classic fillers add volume — instantly, visibly, where they sit. Biostimulators are something else: they trigger the body's own processes. Collagen synthesis, microcirculation, cellular regeneration. Results build over weeks to months. In return, effects last longer and work with existing tissue rather than simply placing additional material into it.
This distinction matters because expectations should match. Patients hoping to see the full change in the mirror within an hour are not ideally suited to biostimulators. Patients building skin quality over six to twelve months are.
Top 4 biostimulators in direct comparison
1. Sculptra — Poly-L-Lactic Acid
Sculptra is the classic of collagen stimulation. The active substance Poly-L-Lactic Acid (PLLA) triggers a controlled foreign-body reaction leading to neocollagen formation. Effects build over three to six months and can last up to two years.
My typical indication: large-area volume loss, hollow cheeks, gaunt temples. Sculptra is not for correcting individual wrinkles — it is the choice when an entire region needs structural support.
2. Radiesse — Calcium Hydroxylapatite
Radiesse has a dual mechanism: immediate volume effect through the CaHA carrier gel and longer-term collagen stimulation. This places it between classic filler and pure biostimulator.
Indication in my practice: jawline, chin, cheek angles — areas where immediate definition and long-term structural stability are both desired. Effect duration: 12–18 months.
3. Polynucleotides — PDRN
Polynucleotides work at the cellular level. They can reduce micro-inflammation, support skin regeneration, and are particularly well tolerated by thin, sensitive skin.
Preferred application: under-eye area, neck, décolleté, thin skin in younger patients. Effect duration: 6–12 months, typically over multiple sessions. More detail: PDRN for skin quality.
4. Profhilo — HA Bioremodeling
Profhilo combines high- and low-molecular hyaluronic acid in a patented stabilisation. It hydrates deeply and stimulates both collagen and elastin — a special position among HA products.
My most frequent entry-level biostimulator. Two sessions, clear results after 4–8 weeks, well combinable. Effect duration: 6–9 months. Detailed comparison: Profhilo vs. polynucleotides vs. skinbooster.
Direct comparison at a glance
| Sculptra | Radiesse | Polynucleotides | Profhilo | |
|---|---|---|---|---|
| Active substance | Poly-L-Lactic Acid | Calcium Hydroxylapatite | PDRN fragments | HMW + LMW Hyaluronic Acid |
| Immediate effect | Minimal | Yes, via carrier gel | No | Light hydration |
| Effect duration | Up to 24 months | 12–18 months | 6–12 months | 6–9 months |
| Sessions | 2–3 | 1, sometimes 2 | 2–4 | 2 |
| Main indication | Large-area volume loss | Jawline/chin contouring | Skin quality, thin skin | Hydration + tightening |
| Price from | from 549 EUR/session | from 549 EUR/session | from 399 EUR/session | from 399 EUR/session |
Which biostimulator when?
When the cheeks appear hollow
For visibly sunken mid-cheek volume, Sculptra is usually the first choice. Acts not pointwise but across the area — exactly what a gaunt mid-face needs.
When the jawline loses definition
Radiesse structures immediately and works long-term. For patients who want both contour sharpness and skin quality.
When skin is thin, dull, or sensitive
Polynucleotides are the gentle option. Particularly proven for the under-eye area, neck, and patients reacting strongly to other products.
When entry into biostimulators is sought
Profhilo. Mild reaction, clear effect, two sessions — easily planned. Ideal first encounter with the world of biostimulators.
Combinations: what works
In my practice, combinations are the rule, not the exception. Three examples I frequently recommend:
Profhilo + polynucleotides: hydration plus cellular regeneration. The most-chosen combination for early skin quality decline from mid-30s.
Sculptra + Profhilo: structural volume work plus skin quality. Useful from mid-40s when both decline in parallel.
Radiesse + polynucleotides: contour sharpness on the jawline plus thin, sensitive areas. A combination I see often in male patients.
More on meaningful combinations: guide to combination treatments.
Frequently asked questions
Which biostimulator lasts longest?
Sculptra. Effect window up to 24 months with full protocol. Profhilo acts shorter but more gently and is easier to repeat.
Which biostimulator suits the under-eye area?
Polynucleotides. Very well tolerated on thin under-eye skin. Sculptra and Radiesse are not suitable here.
How many sessions per year?
Depends on the substance. Profhilo: twice yearly. Polynucleotides: a cycle of 2–4 sessions per year. Sculptra: one build cycle, then maintenance after 1–2 years. Radiesse: every 12–18 months.
Can I use multiple biostimulators in parallel?
Yes, in different sessions. A 2–4-week interval between substances is typical. This allows observation of effects and dose adjustment.
Which biostimulator has the fewest side effects?
Polynucleotides are considered the gentlest. Profhilo shows initial papules for 12–24 hours. Sculptra and Radiesse may have longer swelling phases — well controllable with correct technique.
Can a biostimulator change the result after placement?
Yes. Skin remodels over months. What was barely visible on treatment day may emerge as significantly improved skin quality after three months. Patience is part of the concept.
