Hair follicles supply a crucial brain development protein to the brain via platelets.
January 2022 in “Stem cell biology and regenerative medicine” The document concludes that hair follicle regeneration involves various factors like stem cells, noncoding dsRNA, lymphatic vessels, growth factors, minoxidil, exosomes, and induced pluripotent stem cells.
January 2016 in “Hematology & Transfusion International Journal” Platelet Rich Plasma (PRP) injections can improve hair count, thickness, and strength in people with androgenic alopecia.