Your hairstylist has a big job: He or she is there to help you look your absolute best, reinvent yourself if you wish, and maybe even get over a breakup. So, shouldn't you be there for your hairstylist, too? We're not saying you need to give the same kind of support (you are paying this person), but there are things that you can do to make his or her job — and life — a little easier. And, unknowingly, some of your (bad) habits could be doing just the opposite. We talked to some of the industry's top colorists to find out the behaviors that really get under their skin.