I had a fair amount. My hair is really thick, and I didn't realise it had started to thin. However, consistently all through my scalp I have "old" hair and shorter, post hrt ala dutasteride "new hair". My hair grows at about 1/2-3/4 an inch a month, so the length is right for the amount of time I've been on dutas. For a while it was two different colors and that was quite a show. If you decide to use it, get a fresh dye job first so you can see if it's working!