ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm trying on using Rogaine. Heard some rumors about it working after just a couple hours, but that seems kinda crazy, right? Anyone else try this hair growth serum and actually see something in that time frame? Hit me up with your thoughts. Here's a few things I'm curious: How much Rogaine do you gotta use? Is it important to appl