yomommyz,
I'm 31 and have been taking proscar 1.25mg/day for about 6 years. It has not completely stopped my hair loss, however has slowed it down very considerably. I began losing my hair at 20, and started to use rogain shortly thereafter. I couldn't tell you if it did any good, but I didn't continue using it because it was a pain in teh but and all my pillows started turning yellow. I started proscar around 25-26, and have been on it ever since. My younger brother is bald and most of the men on my moms side of the family are completely bald. I have very thick hair everywhere except for my receding hairlines. From what I undersand, both rogaine and proscar don't really do as much for the hairlines as they do for the crown. I would recommend using it as long as you don't have any serious side effects. I've noticed sometimes that I get a sligt bit of discomfort in my testicles, however I take it before I go to bed so I don't really notice it much. I've been to the doctor and they where not concerned about it. I hope this helps & good luck with everything.