Exosome Therapy for Scalp Hair Growth—A Review of the In Vivo and In Vitro Evidence

The review of preclinical studies on exosome therapy for hair growth analyzed 10 relevant articles, with 9 indicating positive effects on hair growth, such as prolonged anagen phase, increased hair growth, and alterations in hair-related growth factors. The studies included both in vivo (mouse or rat) and in vitro (mouse, goat, or human cells) research. One study on alopecia areata in a C3H/HeJ mouse model showed improvement with exosome use. Despite promising preclinical results, human clinical studies are necessary to confirm the efficacy of exosome therapy for hair growth in humans.