I can't imagine that you'd have much of a problem, especially if you are a man. I know tons of very successful plastic surgeons who are full of wrinkles, obese physicians who practice weight loss medicine, etc. I'm a 35 year old woman and many of my patients ask me what I've had done or how old I am. My 60ish year old male partner never gets asked those questions. My guess is that they'll judge your staff's appearances more than yours. Having said all that, you'll need to be trustworthy and skilled in your field or, scar or no scar, you will likely not succede since this field is fee for service and there is plenty of competition.