New Colgate Whitening toothpaste with Baking Soda & Peroxide has been proven to get teeth an average of 2.8 shades whiter in just 30 days when used daily in a clinical trial. It whitens teeth, removes stains and protects against caries and calculus. The unique formula includes a whitener, a caries preventive and a calculus-control system. The combination of the tartar-control system and the whitener is what makes new Colgate Whitening with Baking Soda & Peroxide so effective against stains. For details, circle the number below on the reader service card.