June 2019 in “International journal of dermatology and venereology” The Hedgehog Signaling Pathway is important for skin and hair development and skin cancer treatment, but more research is needed to understand it fully.
Hair follicles supply a crucial brain development protein to the brain via platelets.
May 2022 in “Cardiovascular Toxicology” Finasteride-loaded microemulsions, made with cinnamon oil, Tween20, propylene glycol, and water, can help maintain stemness of dermal cells, potentially aiding in hair regeneration.