ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm hopping on using Rogaine. Heard some talk about it helping after just 12 hours, but that seems kinda sketchy, right? Anyone else try this hair growth serum 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? Wh