Behind the Paste: Sensodyne
Ingredients & How They Work

Potassium nitrate helps prevent the nerves in your teeth from sending pain signals—triggered by certain stimuli, like hot coffee or ice water—to your brain. It is known as a nerve-calming ingredient.

Stannous fluoride acts to build a protective barrier over the sensitive areas of your teeth. This layer helps prevent stimuli, like hot and cold liquids, from reaching the nerves and causing pain. Sensodyne Complete Care and Sensodyne Rapid Relief contains Stannous fluoride. Sensodyne Repair and Protect contains NovaMin.

Fluoride is a mineral that helps strengthen tooth enamel to help prevent tooth decay. Once enamel is worn down, the dentin layer underneath becomes exposed and more susceptible to sensitivity. Sensodyne toothpastes contain sodium fluoride or stannous fluoride.