Issues with premature Rogaine use?

[DuckingAngels]

It is completely natural and normal for males to lose their temple hair as they mature into adults. The loss of temple hair alone is not an indication of MPB. Since it is completely natural and normal for males to lose their temple hair as they mature into adults, it is not likely that anything you do will stop it. Some males do manage to grow back some temple hair with Rogaine but most do not.

If the temple recession is quite uneven (I'm more receded on my left hand side, also have stronger beard growth on this side) is this evidence for a simple maturing hairline, MPB, or entirely inconclusive?

EDIT: Also, is your advice about temple usage implicitly saying that there is no detrimental affect to premature Rogaine use? Wasted money aside?

Thanks in advance.