Sensodyne iso-active Whitening Toothpaste is a breakthrough in oral health care technology. Starting off as a gel on your brush, it instantly transforms into a micro-fine foam in your mouth. This innovative foaming action disperses quickly to penetrate critical, hard-to-reach areas providing all around protection and sensitivity relief. Sensodyne iso-active Whitening Toothpaste helps to restore teeth to their natural whiteness and provides sensitivity relief. Great for people who want tooth whitening and treatment of sensitivity.