Once you've achieved the level of white you want, it is up to you to maintain your bright, white smile. Remember it takes just as long to stain your teeth again as it did in the first place, and good habits and oral hygiene are the best ways to keep your dazzling smile. You may want to use a whitening toothpaste like Opalescence Whitening Toothpastes in order to help maintain your white smile while also increasing your oral health. If you are concerned that your white smile is fading, ask your dentist about a touch-up treatment for a couple of nights once or twice a year to retain your desired shade.