Colgate Baking Soda and Peroxide Whitening Toothpaste 5 pack. 8 ounces. Colgate Baking Soda and Peroxide Whitening Toothpaste, with a great Brisk Mint flavor, refreshes & cleans for whiter teeth. This whitening toothpaste cleans deep, preventing cavities and the build-up of tartar. Our unique formula releases pure oxygen bubbles every time you brush your teeth for a clean, fresh sensation. This baking soda and peroxide whitening toothpaste has a Brisk Mint flavor that freshens breath.