Been using it for 4 years and I still experience periods of thickening/regrowth, although I believe I'm an unusually good responder. Started finasteride a little over 2 months ago and I believe in combination with the minoxidil, it's beginning to work wonders. The top and front are thickening, the crown is filling in quicker, and I have dozens, if not hundreds, of tiny dark hairs pushing through all over the front/top. I think within the year, I will have hair like I haven't had since I was 25. (going to be 37 in a couple weeks)