Regaine/Rogaine Foam dhow long can u make it last?

[sausage]

I assume that guys tend to style their hair differently, spike or puff their hair up whereas women just have their hair combed flat to their heads so I would guess this has a difference.

I have my hair buzzed short so its ok for me, seems to soak into the scalp quite well.

The label says to use half a cap of foam per application, but 1/4 of a cap is enough to cover the whole top of my scalp which helps.