May 2024 in “Dermatologic surgery” Nonactivated low leukocyte PRP injections can significantly increase hair and follicle density in women with alopecia.
January 2025 in “Advances in Clinical Medicine” 
4 citations
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August 2018 in “Facial Plastic Surgery Clinics of North America” Platelet-Rich Plasma (PRP), a protein-rich extract from a patient's blood, shows promise in improving hair density, thickness, and quality, but the best method of use and number of treatments needed for noticeable results are still unclear.
21 citations
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June 2019 in “Dermatologic Surgery” Platelet-rich plasma (PRP) treatment has been found effective in promoting hair growth for alopecia patients, with minimal side effects like temporary pain and redness.
45 citations
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September 2018 in “International Journal of Women's Dermatology” PRP shows promise for hair loss treatment, with three initial monthly injections and maintenance every 3-6 months.