Bleaching products, like in-office or take-home professional teeth whitening products, can change the color of your teeth, whitening them beyond your natural color. The food-safe chemicals penetrate the enamel and dentin to remove both surface stains and deep discolorations. Teeth whitening products that work through stain removal restore the natural color of your teeth by removing surface stains, not by bleaching. These can include toothpaste or prophy pastes that physically remove stains using abrasive agents. No matter what type of teeth whitening product you use, be sure to look for the ADA Seal of Acceptance, especially for at-home kits; this seal guarantees that the product has been tested and found to be safe and effective for teeth whitening.