How many shades whiter can I expect my teeth to get?

The amount of whitening varies from client to client and cannot be predicted or
guaranteed; but in general use, teeth may lighten anywhere from 6 to 12 shades on the whitening shade guide. The results depend greatly on how discolored the teeth were originally. Yellow or brown teeth, surface stains, and uniformly darkened teeth are easiest to whiten. In order to achieve your desired shade, we recommend using our whitening strips at least 3 times a week, in conjunction with our sonic toothbrush and whitening toothpaste for optimum results.