ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm hopping on using Rogaine. Heard some talk about it working after just a couple hours, but that seems kinda wild, right? Anyone else try this magic potion and actually see changes in that time frame? Hit me up with your experiences. List a few things I'm curious: How much Rogaine do you gotta use? Does apply it to dry hair? What