These four innovations will help you ditch stains and brighten your teeth.
Arm & Hammer Whitening Booster ($5; at drugstores) is squeezed on top of your toothpaste to get rid of stubborn spots.
Opalescence Trèswhite Supreme trays (from $57; ultradent.com) hold fruitand mint-flavored bleaching solutions.
iWhite Light Activated Whitening Kit ($50; drugstore.com) uses a blue light to activate its whitening action.
Crest Healthy Radiance Toothpaste ($12; at drugstores)comes with four brightening strips to be used weekly.