(HealthDay)—Subcutaneous injection of platelet-rich plasma (PRP) may be effective for treating alopecia, according to an experimental study published Nov. 11 in the Journal of Cosmetic Dermatology. Sophie Orliac, M.D., from Université Paris Diderot, and colleagues assessed the potential of PRP subcutaneous injection to treat alopecia and to evaluate local toxicity in 12 hairless rats. Subcutaneous injection occurred in...