Peter Attia· MD
once the follicle is what's called gist damaged beyond repair miniaturized down to a certain level it reaches a point of no return so the terminal hair is a good healthy oak tree in the forest that's the your best best quality hair is a terminal hair vellus hair is the type of hair you have on the top part of your cheek it's invisible it's less than 2 millimeters long it doesn't have any pigment to it it's very thin in terms of its diameter so if a follicle was producing a terminal hair and then it miniaturizes all the way down to now creating a vellus hair you're out of luck meaning that there's nothing that we know of that I know of that's going to revive that follicle and get it to regain any kind of significant amount of growth