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Updated: Dec 24, 2025
Mechanical and Controlled PRP Injections in Patients Affected by Androgenetic Alopecia
Published on: January 27, 2018
Treatment of Male-Pattern Alopecia with Platelet-Rich Plasma
Aline Lissa Okita1, Denise Steiner1, Sineida Berbert Ferreira2
1Departamento de Dermatologia da Universidade de Mogi das Cruzes, São Paulo, Brazil.
Background:
Androgenetic alopecia (AGA) affects up to 80% of men and 50% of women throughout their lifetime, causing significant discomfort. Minoxidil, finasteride, and low-level laser light therapy are the only Food and Drug Administration-approved treatments for AGA, and they have shown positive results in randomized controlled trials and meta-analyses. However, their efficacy is limited, and new therapies are needed. Injection of platelet-rich plasma (PRP), a minimally invasive technique, has been described by several authors as a promising treatment for AGA. Although many studies report beneficial effects of PRP on AGA, there is no standardized practice for PRP preparation and administration or a standard method to evaluate results.
Objective:
The aim of this study was to evaluate the efficacy of manually prepared PRP in the treatment of male AGA.
Materials And Methods:
We treated 20 male patients with AGA with 3 monthly injections of PRP and analyzed results by TrichoScan®.
Results:
In this study, there was no statistically significant improvement in hair count or proportion of anagen hairs.
Conclusions:
This lack of response could be related to any of the variables during PRP preparation described above and also to the limited number of patients in the study.
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