Hair Therapy: PRP and Microneedling for Alopecia — Evidence

The review evaluates the effectiveness of PRP and microneedling in treating alopecia, showing a 30-40% improvement in hair density, particularly in early-stage androgenetic alopecia. The combination of PRP with microneedling is more effective than PRP alone, enhancing hair growth by delivering growth factors directly to hair follicles. The review also discusses a multimodal approach, including minoxidil and LLLT, which further enhances efficacy. The treatment protocol involves regular sessions and applications, but results reverse within 12-18 months if discontinued. Limitations include small study samples and lack of standardized PRP preparation, with advanced cases potentially requiring hair transplantation.