Sensodyne Pronamel Gentle Whitening, Enamel Strengthening Toothpaste, 4 ounce (Pack of 2) Helps protect tooth enamel from further damage caused by acidic foods and drinks Contains a unique optimized formulation that helps minerals, like calcium found in saliva, penetrate the enamel surface Helps strengthen teeth, fight cavities, and freshen breath Features low abrasivity to help limit tooth enamel erosion