Nizoral contains a drug of only 1% that in theory helps block Dht when its used as a topical cant spell the name without looking at it but its on the bottle starts woth a "K"
its ketocozanole. as far as i know its an anti-fungal not an anti-DHT. someone correct me if i am wrong. spiro and azelaic acid are anti-DHT topicals. but nizoral works for some reason in the keeping of hair, as an anti-fungal.