Perfect Smile Premium Whitening Toothpaste for Sensitive Teeth is formulated with Potassium nitrate, a desensitizing agent that soothes the underlying nerve bundles and tissues in your teeth. It provides long-lasting relief and helps build nerve protection. With consistent use, it significantly reduces discomfort when consuming hot or cold food & beverages. Perfect Smile’s premium formulation also helps removes stains and plaque build-up, leaving you with whiter teeth, fresher breath, and healthier gums for that pain-free and perfect smile.