Resources

We monitor the peer-reviewed literature to keep our library up to date with current research

Before you choose a clinic

Choosing a PRP Provider

What to ask a PRP clinic to know if they use appropriate technique for a good platelet dose based on published research.

Before your visit

Instructions Before PRP

What to do and what to avoid the week before your PRP treatment.

After your visit

Instructions After PRP

What to do and what to avoid after your PRP treatment + How to use the aftercare pack

If you have had a transplant

PRP After a Hair Transplant

PRP alongside a transplant protects the graft and the hair around it

Common questions

Most Affirmed patients pay $200/month for 4 PRP treatments a year

Doctors’ offices often charge more than $1,000 for Hair Growth PRP, yet you will find it advertised on Groupon for $1001

Be skeptical of unusually low prices. PRP supplies for evidence-based protocols cost well over $150 for a single session, so a session priced below that might be using cheaper, poorly studied alternatives to cut cost

PRP results last as long as you keep up maintenance. Treatment every 3 to 6 months sustains results. Without maintenance, effects start to wear off2–3

PRP can reactivate dormant follicles and restore the size of miniaturized ones, so hair that has recently thinned can grow back thicker. It cannot revive a dead follicle, which is why results are strongest in areas that are thinning or recently bare4–20

Not yet. PRP is not FDA approved for the treatment of hair loss, though PRP preparation systems have earned FDA clearance for other medical applications. A growing body of research supports PRP as an effective treatment for hair loss with no known long-term risks. For those reasons, PRP has been increasingly used off-label in medical settings for hair restoration and preservation

All questions

Questions or concerns? Text us at 212-655-7534

Bibliography

See the sources for the information on this page.
  1. 1.

    Bart W Oudelaar, Joost C Peerbooms, Rianne Huis In 't Veld, et al. Concentrations of Blood Components in Commercial Platelet-Rich Plasma Separation Systems: A Review of the Literature. Am J Sports Med 47(2):479-487 (2018).

    Systematic review · Full record

  2. 2.

    Pietro Gentile Long-term Clinical Outcomes of Autologous Non-activated Platelet-rich Plasma (A-PRP) Delivered Through Mechanical and Controlled Infiltration in Male and Female Androgenetic Alopecia: A 10-year Prospective Randomized Evaluator-blinded Study. Aesthet Surg J :sjag181 (2026).

    Observational study · Adds a condition to a point above · Full record

  3. 3.

    Pietro Gentile, Simone Garcovich, Alessandra Bielli, et al. The Effect of Platelet-Rich Plasma in Hair Regrowth: A Randomized Placebo-Controlled Trial. Stem Cells Transl Med 4(11):1317-1323 (2015).

    Randomized trial · Full record

  4. 4.

    Mohammad Ali Mapar, Sadegh Shahriari, Mohammad Hosein Haghighizadeh Efficacy of platelet-rich plasma in the treatment of androgenetic (male-patterned) alopecia: A pilot randomized controlled trial. J Cosmet Laser Ther 18(8):452-455 (2016).

    Randomized trial · Reports a different result for a point above · Full record

  5. 5.

    Qian Qu, Panli Shi, Yanhua Yi, et al. Efficacy of Platelet-rich Plasma for Treating Androgenic Alopecia of Varying Grades. Clin Drug Investig 39(9):865-872 (2019).

    Observational study · Full record

  6. 6.

    Anna L Brinks, Carli Needle Lawrence, Derek Maas, et al. Additive Effects of Platelet-Rich Plasma and Systemic Therapies in Androgenetic Alopecia: A Retrospective Study. Skin Appendage Disord :1-4 (2026).

    Observational study · Full record

  7. 7.

    Reham Ezz El-Dawla, Maryam Abdelhaleem, Amr Abdelhamed Evaluation of the safety and efficacy of platelet-rich plasma in the treatment of female patients with chronic telogen effluvium: A randomised, controlled, double-blind, pilot clinical trial. Indian J Dermatol Venereol Leprol 89(2):195-203 (2022).

    Randomized trial · Full record

  8. 8.

    Jing Yuan, Yimin He, Hui Wan, et al. Effectiveness of platelet-rich plasma in treating female hair loss: A systematic review and meta-analysis of randomized controlled trials. Skin Res Technol 30(8):e70004 (2024).

    Meta-analysis · Full record

  9. 9.

    Satyendra K Singh, Shailesh Singh Effect of platelet counts and activator in platelet-rich plasma on the treatment of androgenetic alopecia, split-head comparison: A randomised, double-blind study. Indian J Dermatol Venereol Leprol 89(5):647-655 (2023).

    Randomized trial · Full record

  10. 10.

    Suat Morkuzu, Alexandra Loren McLennan, Muholan Kanapathy, et al. Use of Activated Platelet-Rich Plasma (A-PRP) on Alopecia: A Systematic Review and Meta-Analysis. Aesthet Surg J 43(8):NP631-NP649 (2023).

    Meta-analysis · Full record

  11. 11.

    Amelia K Hausauer, Derek H Jones Evaluating the Efficacy of Different Platelet-Rich Plasma Regimens for Management of Androgenetic Alopecia: A Single-Center, Blinded, Randomized Clinical Trial. Dermatol Surg 44(9):1191-1200 (2018).

    Randomized trial · Full record

  12. 12.

    Aditya K Gupta, Helen J Renaud, Mary Bamimore Platelet‐rich plasma for androgenetic alopecia: Efficacy differences between men and women. Dermatol Ther 33(6):e14143 (2020).

    Meta-analysis · Full record

  13. 13.

    Salvatore Giordano, Marco Romeo, Pietro di Summa, et al. A Meta-analysis On Evidence Of Platelet-rich Plasma for Androgenetic Alopecia. Int J Trichology 10(1):1-10 (2018).

    Meta-analysis · Full record

  14. 14.

    XiuXiu Zhang, YuXiu Ji, MingChun Zhou, et al. Platelet-Rich Plasma for Androgenetic Alopecia: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Cutan Med Surg 27(5):504-508 (2023).

    Meta-analysis · Reports a different result for a point above · Full record

  15. 15.

    Lucas Kieling, Ana Terezinha Konzen, Rafaela Koehler Zanella, et al. Is autologous platelet-rich plasma capable of increasing hair density in patients with androgenic alopecia? A systematic review and meta-analysis of randomized clinical trials. An Bras Dermatol 99(6):847-862 (2024).

    Meta-analysis · Reports a different result for a point above · Full record

  16. 16.

    Paul Gressenberger, Gudrun Pregartner, Thomas Gary, et al. Platelet-rich Plasma for Androgenetic Alopecia Treatment: A Randomized Placebo-controlled Pilot Study. Acta Derm Venereol 100(15):adv00247 (2020).

    Randomized trial · Reports a different result for a point above · Full record

  17. 17.

    Antonio Flávio Queiroz de Oliveira, Francisco Plácido Nogueira Arcanjo, Maria Rosineida Paiva Rodrigues, et al. Use of autologous platelet-rich plasma in androgenetic alopecia in women: a systematic review and meta-analysis. J Dermatolog Treat 34(1):2138692 (2023).

    Meta-analysis · Reports a different result for a point above · Full record

  18. 18.

    Eduardo Anitua, Roberto Tierno, Mohammad H. Alkhraisat Platelet-Rich Plasma in the Management of Alopecia: A Systematic Review and Meta-Analysis of Clinical Evidence. Dermatologic Therapy (Heidelberg) 15(11):3213-3252 (2025).

    Meta-analysis · Reports a different result for a point above · Full record

  19. 19.

    Meijia Li, Kaipan Qu, Qiang Lei, et al. Effectiveness of Platelet-Rich Plasma in the Treatment of Androgenic Alopecia: A Meta-Analysis. Aesthetic Plast Surg 48(5):977-984 (2024).

    Meta-analysis · Reports a different result for a point above · Full record

  20. 20.

    Kriti Batni, Dheeraj Khetan, Ankur Bhatnagar, et al. Novel method for preparation of autologous leucocyte rich platelet-rich plasma (L-PRP) under closed system and assessment of its clinical efficacy in androgenetic alopecia—A retrospective cohort study. J Plast Reconstr Aesthet Surg 103:128-139 (2025).

    Observational study · Full record

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