TLDR PRP injections improve hair density in men with hair loss, with few short-term side effects.
The study found that platelet-rich plasma (PRP) injections can be a safe and effective treatment option for men with androgenetic alopecia (AGA). The study included 30 males who received 3 PRP injections at one-month intervals. Hair density increased by 19.17% following the intervention, and the improvement was sustained at 4 months. The study concluded that PRP injections have a favorable effect on hair density in male patients diagnosed with AGA, with minimal short-term side effects.
11 citations,
January 2019 in “Dermatologic Therapy” Not enough evidence to support using platelet rich plasma for hair loss treatment.
15 citations,
March 2018 in “Journal of The American Academy of Dermatology” PRP therapy improves hair density and thickness in AGA patients, even with other treatments.
16 citations,
January 2018 in “Dermatology Online Journal” PRP shows promise for treating hair loss but needs more research.
87 citations,
September 2016 in “Dermatologic Surgery” PRP shows potential for treating female hair loss, but more research needed.
57 citations,
May 2016 in “Journal of Dermatological Treatment” PRP therapy may effectively treat hair loss, but more research needed.
136 citations,
April 2016 in “Dermatologic Surgery” PRP treatment helps hair growth and density in androgenetic alopecia patients.
107 citations,
August 2014 in “Dermatologic Surgery” PRP injections improve hair thickness for baldness.
2 citations,
January 2011 in “The Korea Journal of Herbology” Korean medicinal herbs in hair tonic and food increased hair growth in mice.
2 citations,
June 2004 in “PubMed” Carbamazepine caused hair loss in a man, which stopped after he stopped taking the drug.
12 citations,
February 2003 in “PubMed” 
6 citations,
August 1991 in “Pediatric Clinics of North America” The document concludes that various hair and scalp disorders in children have specific treatments and proper diagnosis is essential.
