I was cleaning up a guys face today and thought i would try a different way of retouching. Typically i would use the healing tool or the clone stamp set to a lower opacity and build up the retouch. This time i first used the healing tool with a brush a bit bigger than the wrinkle i was retouching. I healed the whole wrinkle and then, right after you heal one, go to edit - fade, and lower the opacity until it looks faded but natural. Fade will only work on the tool you have applied last.