There are three major hair growth products available: Minoxidil, ketoconazole shampoo, and Propecia. Minoxidil was originally an oral hypertension drug that was found to cause hair regrowth and is now sold as a topical solution. Ketoconazole shampoo contains an ingredient commonly found in dandruff shampoos that is beneficial for hair regrowth. Propecia is an oral medication designed specifically to reduce male pattern baldness by lowering dihydrotestosterone levels. These three products alone or in combination have been found to be effective in stimulating hair growth in over 80% of men when used consistently.