Well there are two schools of dermarolling:
1) The one that says you must inflict massive damage (reach the follicle, so around 1.5mm balls deep) and this will generate certain growth factors, do this like once a month or bi weekly
2) The one that says you just must do it to improve absorption of topicals, so not pressing much, just to create superficial holes, then they apply the minoxidil or whatever. I still think this is insane, it must sting like a mofo to put topicals on open wounds even if superficial. Some even do this daily. User "Somebody" got massive regrowth but it just could be another awesome finasteride responder.
WHO IS CORRECT?