Will Propecia/Finasteride maintain or improve my hair for as long as I take it?
I have seen conflicting answers to this question. I'm 22 and have been on it for 3.5 years with good results and thickening of my hair, but I am worried about what the future holds. Based on the 10 year finasteride study, is it true that the drug may be even more effective the longer you take it?

