But few if any of these hair regrowth agents have been published. This has yet to work out. E.g., clinical trials with cyoctal, arguably the most potent topical antiandrogen, were terminated because of lack of effectiveness. Even castration, the commonly used treatment for prostate cancer, generally doesn't do a lot for balding and hair loss. Tho the weakest antiandrogen on paper, it seems to be as effective as the others in baldness treatment.
Some individuals take even longer to respond.
I sure wish antiandrogens worked better. Further, whatever hormones do seems to be mostly irreversible. The main damage to the hair follicle seems to be done by other factors, especially immunological. But I reserve the right to change my mind about this. . These are blood vessel dialating hair regrowth stimulators.