ROGAINE AFTER 12 HOURS REDDIT - DOES IT WORK?

Yo dudes, so I'm hopping on using Rogaine. Heard some stuff about it making a difference after just short amount of 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. Here's a few things I'm thinking about: What much Rogaine do you gott