ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm hopping on using Rogaine. Heard some stuff about it helping after just a couple hours, but that seems kinda crazy, right? Anyone else try this hair growth serum and actually see results in that time frame? Hit me up with your experiences. List a few things I'm curious: Where much Rogaine do you gotta use? Should apply it to dry