New Colgate Optic White High Impact White delivers 4 shades visibly whiter teeth  with twice daily brushing for 6 weeks. Its enamel safe formula fortifies enamel and contains the whitening ingredient, hydrogen peroxide, to remove both surface  and deeply set in stains. For all the benefits of a regular toothpaste plus a whiter,  brighter, designer smile, try new High Impact White toothpaste today.