ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm trying on using Rogaine. Heard some talk about it working after just 12 hours, but that seems kinda sketchy, right? Anyone else try this magic potion and actually see changes in that time frame? Hit me up with your thoughts. List a few things I'm wondering: How much Rogaine do you gotta use? Should apply it to dry hair? What ki