PRF (Platelet-Rich Fibrin) vs. PRP: is the next-generation biologic worth it?
A guide to PRF (platelet-rich fibrin) — how it differs from PRP, what the evidence says for skin and hair applications, and how to evaluate whether PRF is worth the premium.
· By MedSpot Editorial · 4 min read
PRF (Platelet-Rich Fibrin) is increasingly marketed as the next generation of PRP — positioned as more effective, longer-lasting, and richer in growth factors. Here's what's actually different and whether the distinction matters clinically.
What is PRF?
PRF is a second-generation platelet concentrate derived from blood. Like PRP, it's created by centrifuging the patient's blood — but with a key difference:
PRP: High-speed centrifugation (1,500–3,000 RPM) separates blood into red blood cells, platelet-poor plasma, and platelet-rich plasma. An anticoagulant (usually sodium citrate) is typically added to prevent clotting.
PRF: Lower-speed centrifugation (700–1,200 RPM) without anticoagulant. The slower spin produces:
- A fibrin matrix — a 3D mesh structure formed from fibrinogen as it naturally converts to fibrin without anticoagulant inhibition
- Slower, more sustained growth factor release (the fibrin matrix acts as a depot, releasing growth factors over days to weeks rather than immediately)
- Higher concentration of leukocytes (white blood cells) — particularly lymphocytes and monocytes
- Platelets trapped in the fibrin matrix
Key differences between PRP and PRF
| Factor | PRP | PRF |
|---|---|---|
| Centrifuge speed | High (1,500–3,000 RPM) | Low (700–1,200 RPM) |
| Anticoagulant | Often used | Not used (natural clotting) |
| Structure | Liquid | Gel/membrane (fibrin matrix) |
| Growth factor release | Immediate burst | Sustained (days to weeks) |
| Leukocyte content | Variable (leuko-poor or leuko-rich protocols) | Higher leukocyte content |
| Platelet concentration | 4–6× baseline | 2–4× baseline (lower than PRP) |
| Application forms | Injectable liquid | Injectable gel, membrane, or i-PRF (injectable PRF) |
PRF variants
i-PRF (injectable PRF): A liquid form of PRF centrifuged at very low speed (700 RPM) that remains injectable before the fibrin sets. Used similarly to PRP for scalp and skin injections.
PRF membrane / solid PRF: A gel or membrane that can be placed surgically or applied topically after needling procedures. Used in some dental/surgical settings and increasingly in aesthetic procedures.
Liquid PRF + HA (LPRP+HA): Some protocols add hyaluronic acid to i-PRF to create a "injectable matrix" for under-eye or skin quality applications.
Evidence for PRF in aesthetics
For skin rejuvenation:
- Growing number of case series and small clinical studies show comparable or slightly superior outcomes to PRP for skin quality improvement
- The sustained release mechanism is theoretically advantageous — growth factors active over weeks vs. hours
- However, the lower platelet concentration compared to high-quality PRP systems means it's not self-evidently superior in platelet delivery
- RCT evidence directly comparing PRF to PRP for skin is limited; most studies are small and vary in protocol
For hair loss (androgenic alopecia):
- Several studies comparing PRF to PRP show PRF producing equal or greater improvement in hair density at 3–6 months
- Proposed mechanism: sustained growth factor release may more effectively stimulate follicle cycling
- 2022 study (Raso et al.) showed superior hair count improvement with PRF vs. PRP at 6 months
- Evidence is promising but not yet definitive given study size and heterogeneity
For under-eye injections:
- i-PRF alone or combined with HA is gaining use for tear trough / under-eye rejuvenation as an alternative to HA filler
- The biologic approach avoids some filler complications (Tyndall effect) and may address skin quality as well as volume
- Evidence base is still emerging; technique is more variable than standard HA tear trough injection
The honest comparison
Arguments for PRF over PRP:
- Sustained growth factor release may produce longer-lasting biological effects
- Growing clinical evidence for hair loss — may be superior for this indication
- No anticoagulant — may reduce concerns about anticoagulant effects on growth factor activity
- Novel for skin rejuvenation — may offer benefits not fully characterized yet
Arguments that PRP remains appropriate:
- Larger, more established evidence base
- Higher platelet concentration with quality centrifuge systems (4–6× vs. 2–4× for PRF)
- Lower cost — PRF systems are often more expensive
- Technically simpler — i-PRF requires precise timing before the fibrin sets, making it more technique-dependent
The practical answer: For an experienced provider using a high-quality centrifuge for both, the clinical difference for most patients is likely modest. PRF may have an edge for hair loss specifically; the evidence for skin is less conclusive.
Cost comparison
- PRP session: $400–$800 (scalp or face)
- PRF session: $500–$1,000 (often 20–30% higher)
The premium reflects newer equipment and more technique-intensive application. Whether the clinical benefit justifies the premium depends on the specific indication and the practitioner's experience with each.
Questions to ask before choosing PRF vs. PRP
- For my specific concern (hair loss vs. skin quality vs. under-eye), which has better evidence — PRF or PRP?
- What centrifuge system do you use for each, and what platelet/growth factor concentration does each achieve?
- Why do you prefer one over the other for my concern?
- What is the cost difference, and what additional benefit justifies it?
- Have you treated patients with similar concerns using both — and what did you observe?
For hair loss specifically, see our PRP for hair loss guide for the full hair restoration context.
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