Sensodyne Rapid Action Toothpaste provides fast relief for sensitive teeth with its clinically proven formula. This toothpaste is specially designed to provide rapid relief from tooth sensitivity. The key active ingredient, potassium nitrate, works by soothing the nerves inside the teeth to reduce sensitivity to hot, cold, sweet, or sour foods and drinks. With regular use, this toothpaste builds a protective barrier over the sensitive areas of your teeth, helping to prevent discomfort. The smooth texture of the toothpaste ensures gentle application, leaving your mouth feeling fresh and clean after each use.