Some natural remedies that a woman can use to block dihydrotestosterone on the scalp include saw palmetto, pygeum and pumpkin seed oil, according to About.com. Taking stinging nettles orally may also help to block DHT on a woman's scalp.
Saw palmetto is a type of palm tree that is found in the West Indies and southeastern United States, explains About.com. The berries that grow on these trees have been found to effectively block DHT. Pygeum, or African cherry tree, is an evergreen that has been used for medicinal purposes since the 1700s. When used in conjunction with saw palmetto, DHT has been shown to be reduced dramatically.
Another natural option to reduce DHT on the scalp is pumpkin seed oil, claims About.com. Pumpkin seed oil contains delta-7 sterine, a type of steroid, which blocks the buildup of DHT in the hair follicles. Some people apply the oil directly to the scalp, but others find that it works better when taken orally. Stinging nettles can also be taken orally to block DHT on the scalp, and the best way to use it is to use a concentrated tincture of the root of the stinging nettles. Stinging nettles produce the best DHT-blocking results when used in conjunction with pygeum or saw palmetto.