best toothpaste for teeth whitening - An Overview
Unlike all kinds of other whitening toothpastes, Colgate Optic White removes two kinds of stains from teeth: extrinsic and intrinsic. Extrinsic stains happen on the outside of teeth. Intrinsic stains occur within teeth, but they are often seen on the skin.If you are still unconvinced, Dr. Levine paints us an image: You brush your teeth for (with an