New Sensodyne iso-active™ transforms into microfine foam during brushing, penetrating hard to reach areas to thoroughly clean the whole mouth and soothe the nerve.Used everyday, Sensodyne relieves sensitive teeth by building a protective barrier that blocks the pain caused by hot, cold, sweet, acidic and other contact triggers and keeps it from coming back. Aids in the prevention of dental cavities.Contains Potassium Nitrate, that is clinically proven to reduce painful sensitivityProvides fast relief within two weeksHas fluoride for cavity protectionFreshens breathMade in the USA