hair counts increase on average for a couple of years and then decline gradually. at five years hair counts are decreasing but still above the starting point for most men... they are better off than they started on average. the group that never took finasteride has lost hair for 5 years and is worse off than at the start. if you took finasteride for 5 years and quit it, then within 6-12 months you would lose hair to the point that, on average, you would be similar to those who never took it. so, you've stopped the clock (mostly) for 5 years. after the 5 years there are no long term studies to allow you to know if the slow loss will continue (probably) at a rate greater than, similar to or less than normal pattern baldness... the propecia is working, but longer term studies dont exist to say how well it works... from the boards and from my own experience i had about 4-5 years of delay. when i noticed new thinning i added new treatments.. will they help or make a difference? i dont know. is it possible to delay male pattern baldness for decades with all available treatments? i dont know, as nobody studies this... all you can do is try. some report success long term, but everybody's tendency to male pattern baldness is different.