Minoxidil tincture is able to hair growth, but, due to individual differences, some people use the effect is more obvious, some people may be less satisfactory. The mechanism of this drug hair growth, mainly minoxidil has a certain promotion of local blood circulation, as well as the role of hair follicle growth. Especially seborrheic alopecia, local hair follicle atrophy after the use of the drug topical application, can stimulate the local atrophy of the hair follicle regrowth, some may produce new hair follicles, so that the performance of hair growth. Of course, some people are less sensitive to the drug due to individual differences, so there is a limit to the efficacy produced.