how does finasteride work?????
Studies have shown that male pattern baldness is caused when an enzyme called 5 Alpha (Type 2) Reductase, interacts with the male sex hormone, Testsoterone to produce a new hormone called Dihydrotestosterone (DHT)
High levels of DHT act on the hair shaft by constricting the hair follicle, depriving it of blood and shortening the growing phase. At this point, the follicle is dormant, i.e ...resting and may be revived when the blood supply is restored.
Scientists have found that the most effective way to stop hair loss is to take 1mg. of Finasteride every day to block the action of 5 Alpha Reductase and prevent the conversion of Testosterone to DHT