According to their stats, teeth whitening leads the way as the treatment most people plan on having within the next 12 months. (Vision correction surgery and hair removal followed in popularity.) Teeth whitening is one of the easiest ways to alter your appearance without much fuss, and it can be done quickly and inexpensively. Not surprising, then, that it's the most popular procedure. If you whiten your teeth, do you do it at home or go to a pro?