Dht Blockers are top sellers at Iwantthathair.com. We only sell those with tested and proven ingredients when it comes to both mens hair loss caused by dht and womens. Thinning hair caused by dht is the most common cause of hair loss. By using a topical dht blocker you can limit the effects and sometime reverse the effects of dht on the hair follicle. The shrinking hair follicle is then allowed to grow back to its original thickness. Our top dht blockers include Biotin, Saw Palmetto and we also carry Revivogen that all include hair loss ingredients that are deisgned to stimulate hair growth and block dht in both topical hair serum form and dht shampoos.