Colgate Whitening & Fresh Breath Toothpaste Refreshing Mint removes stains and leaves your breath minty fresh for up to 12 hours. It contains special white accelerator micro-crystals that gently remove stains, making your teeth a shade lighter within one week. Colgate Whitening & Fresh Breath Toothpaste Refreshing Mint makes is specially formulated for whiter teeth and fresher breath. It is clinically proven to make your teeth one shade lighter within a week of use. How it works Colgate Whitening & Fresh Breath Toothpaste Refreshing Mint contains White Accelerator micro-crystals that remove stains and tartar from your teeth.