Sensodyne rapid action is a clinically proven fast acting toothpaste to relieve tooth sensitivity. Sensitivity of teeth is characterized with pain or discomfort that is triggered by sudden temperature changes i.e. hot or cold beverages, or in response to a mechanical stimulus i.e. aggressive brushing. It is formulated in such a way that it creates a thin protective layer over the sensitive areas of the tooth, decreasing the effect of stimulants and providing rapid relief from pain and sensitivity. Sensodyne rapid action has a long lasting effect, it strengthens and whitens the teeth, and provides a long lasting clean and fresh mouth.