Available in paste and gel format in a variety of flavors and formulations. Baking soda helps neutralize bacterial acids that damage tooth enamel. Silica, combined with Baking Soda acts as a gentle abrasive to help clean and whiten teeth, naturally. Vitamin C, a natural enamel-strengthening ingredient and helps fight against gingivitis and promote healthy gums. Contain no colorants, sugar and no animal ingredients. We never test on animals.