Personally, I think it is more accurate to say that "success" for most people will be maintenance, rather than saying that the degree of "success" is age related. The fact is that most people will maintain on finasteride/minoxidil than experience these aggressive positive results that the best responders will get. I'm a good example of that. I've maintained my hair for about 2.5 years now, but haven't really gained anything. That is by far the most common result that I've seen, in contrast to the lucky few who seem to get nearly a full head of hair back from a pretty bad looking progression of male pattern baldness.