Builds increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets or contact. Aids in the prevention of dental cavities. Clinically proven ingredient reduces painful sensitivity. Provides sensitivity relief in as little as two weeks. Helps to remove stains for a whiter, brighter smile. Leaves your mouth feeling clean and fresh. Contains fluoride for cavity protection. Dentists have been recommending Sensodyne toothpaste for over 20 years. Brushing twice a day with Sensodyne toothpaste builds a 'shield of protection' against painful sensitivity.