You’ve seen it on reality shows and sometimes even your favorite celebrities—cosmetic procedures that go too far or patients that go under the knife (or needle) one too many times. When looking at the results of too much pinching, tweaking or filling, one of the first thoughts to cross your mind is, “Why would a doctor allow that?” But there are many doctors that say “no” and have no problem doing so. Perhaps the 400-cc breast implant your friend got won’t work for your body, or your frown lines are better treated with a filler than facelift, there are many instances when a doctor can and will say “no” in order to achieve the best possible results. We talked to a few of our top doctors to find out how and when they know they won’t be able to fulfill a patient’s wishes.