Sensodyne Daily Protection toothpaste is specially designed to reduce tooth sensitivity. Increased tooth sensitivity occurs when dentin is exposed, which is normally protected by hard enamel. When dentin comes into contact with hot, cold, sweet, or acidic substances, irritation of the nerve endings can occur, leading to sharp, short-lived pain through exposed dentinal tubules. Sensodyne Daily Protection works inside the tooth to help soothe nerve irritation and has clinically proven protection against increased tooth sensitivity. * * Provided that you brush your teeth twice a day.