PRP for Androgenetic Alopecia

Local injection of platelet-rich plasma (PRP) for androgenic alopecia was associated with an increased number of hairs and some hair thickness improvement, according to a systematic literature review published in the Journal of Cosmetic Dermatology.

The investigators reviewed six studies involving 177 patients.

There was a significant increase (24%) in local hair number per cm2 with PRP compared to control (scalp areas treated with placebo, vitamin preparations or interfollicular placental extract).

Similarly, the percentage increase in hair thickness for the PRP group was 42% after treatment, representing a 33% increase over control.