Colgate Optic White Whitening Toothpaste, Sparkling White - 0.85 ounce (Case of 24) With regular use, this whitening toothpaste removes intrinsic teeth stains ordinary toothpastes don't. Whitens teeth more than 3 shades (brushing twice daily for 4 weeks), Results start in just one week! Has a special formula made with enamel-safe whitening toothpaste ingredients.