ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm thinking on using Rogaine. Heard some stuff about it helping after just 12 hours, but that seems kinda wild, right? Anyone else try this magic potion and actually see something in that time frame? Hit me up with your thoughts. List a few things I'm curious: What much Rogaine do you gotta use? Does apply it to wet hair? Any side