• Propecia

Finasteride is an oral medication, manufactured by Merck, which blocks the conversion of testosterone to dihydrotestosterone (DHT), the form of the hormone that causes male pattern baldness. It does this by inhibiting the action of the type II 5-alpha reductase enzyme that is present in higher concentration in and around, the hair follicles of balding men with androgenetic alopecia.

• Rogaine (Minoxidil)

Although the mechanism by which minoxidil stimulates hair growth is not known, it probably works by prolonging the hair follicle growth cycle (increases the length of anagen). The effect of the medication is to increases the quality of the hair by increasing the diameter and length of miniaturized (fine) hair. It does not grow hair in areas that are bald.