It will probably work even better then it did on your beard, a least from my experience. However, when you use rogaine on your beard, the hairs can stay in that condition for a very long time (upwards of a year) after discontinuing use. You scalp hair will not be so generous.
Guys, i'm new here, does minoxidil make hair grow back on front & temples?
I'm on minoxidil 5% lotion and finasteride (obv), it made me grow little thin hair especially on temples, is it supposed to become real hair through at some point?