Started noticing thinning hair when I was about 14 years old, but never anything concerning until the summer of 2010 when I decided to do something about it. In august 2010 (Now 17 years old), I started nioxin shampoo after my father who also uses it suggested it. I went through a pretty bad shed (150-200 hairs per day), and not knowing about the nature of what a shed was, decided to stop use of nioxin and started using Rogaine Foam twice a day in late september 2010. I have been on this treatment for almost two months, and the shedding hasn't stopped (now about 100 hairs per day), in fact I have seen considerably increased thinning throughout the top of my head and the only place where I have seen any growth is on the very front of my hairline, and even this is very very little. This is concerning because although I have read that the shedding period can last up to 100 days, I am yet to see any hairs coming in, only empty scalp between the unshed hairs. Has anyone who has had success with Rogaine Foam experienced this long of a shedding period (two months), without seeing even minimal regrowth?