Stem Cells vs PRP for Hair Loss: Complete Comparison
The two most advanced therapies for androgenetic alopecia: evidence, pricing and real results
LongevityMap verdict
Scalp PRP has more evidence and lower cost for mild-to-moderate androgenetic alopecia (Norwood stages I–III). Stem cells are indicated for more advanced cases or where PRP has not produced results. They are complementary in combined protocols.
Head-to-head comparison
Scalp PRP
200–400 € / session
Ideal for:
Mild-to-moderate androgenetic alopecia, alopecia areata, hair density improvement
Advantages
- Over 50 published clinical trials in androgenetic alopecia
- Autologous: zero rejection or allergy risk
- Activates hair follicle stem cells (dermal papilla cells)
- Prolongs the anagen phase of the hair cycle
- Price 3–10x lower than exosomal stem cells
Disadvantages
- Moderate effect: slows hair loss more than regenerating destroyed follicles
- Requires maintenance every 6–12 months to sustain results
- Response highly variable depending on platelet concentration and injection technique
- Not effective in cicatricial alopecia or areas with completely destroyed follicles
Stem Cells / Hair Exosomes
800–3,000 € / session (depending on preparation)
Ideal for:
Moderate-to-severe alopecia, cases where PRP has not responded, follicle regeneration
Advantages
- Superior regenerative mechanism: more potent and longer-lasting growth factors than PRP
- MSC exosomes contain over 100 active growth factors and miRNAs
- Can revitalise follicles that PRP fails to reactivate
- Fewer sessions needed vs PRP for equivalent results
- Promising emerging evidence in phase 1 and 2 trials
Disadvantages
- Cost 4–10x higher than PRP
- Clinical evidence in alopecia still limited (small-n studies)
- Unregulated market: enormous variability in exosome preparation quality
- Allogeneic origin: small immunological reaction risk (minimal with exosomes)
- No validated standard protocols in clinical guidelines
Summary table
| Feature | Scalp PRP | Stem Cells / Hair Exosomes |
|---|---|---|
| Price | 200–400 € / session | 800–3,000 € / session (depending on preparation) |
| Invasiveness | Minimally invasive (micro-injections into scalp) | Minimally invasive (scalp injection or mesotherapy) |
| Sessions | 4–6 initial sessions + 1–2 annual maintenance | 2–3 initial sessions with review at 6 months |
| Efficacy | 79/100 | 86/100 |
| Safety | 96/100 | 88/100 |
| Value € | 82/100 | 55/100 |
| Recovery | 85/100 | 80/100 |
When to choose each option
You have mild-to-moderate androgenetic alopecia (Norwood I–III) and want the treatment with the most evidence.
You want to slow hair loss and improve density with the best cost-efficiency.
You have tried PRP for 6 months without sufficient response and are looking for a more potent option.
You have moderate-to-severe alopecia (Norwood III–IV) with significant hairline recession.
Frequently asked questions
How many scalp PRP sessions are needed to see results?▾
Are hair exosomes safe?▾
Can PRP be combined with minoxidil or finasteride?▾
Related guides
Which is the best clinic for this treatment?
Compare price and verified quality at clinics across Spain.
Find verified clinics