Builds increasing protection against painful sensitivity of the teeth to cold, heat, acids, sweets, or contact. Aids in the prevention of dental cavities. Use Sensodyne whenever you normally brush: It provides fast relief within two weeks. It helps to remove stains for whiter teeth. Its improved taste keeps mouth feeling fresh & clean. #1 doctor recommended brand for sensitive teeth. Dentists have been recommending Sensodyne for over 20 years. This product contains no sugar.