What is the difference between minoxidil and finasteride?

They are different medicines used in different ways. Minoxidil is applied to the scalp as a topical solution or foam, though an oral form is also used in some circumstances. Finasteride is taken as a tablet and works on the hormonal pathway involved in male pattern hair loss.

Because they act differently, they are sometimes used together and sometimes separately, and they have different considerations. Finasteride carries specific warnings including around handling by people who are or may become pregnant. Minoxidil is most commonly associated with scalp irritation and with increased shedding when first started.

Both share one feature worth understanding before starting: they work while being used, and visible change generally takes months rather than weeks. Which is appropriate for you, and whether either is, is a question for a prescriber who can see your scalp.