When the protective layer of teeth (enamel) is worn away or gums recede, the dentine underneath becomes exposed. When the exposed dentine comes in contact with hot, cold, sweet or sour food and drinks, it can trigger a sharp short sensation called tooth sensitivity. Sensodyne Fresh Mint is a daily fluoride toothpaste that helps protect against tooth sensitivity, while still providing the benefits of a regular paste like strong teeth and health gums. It also has a mint flavor that keeps your mouth feeling fresh and clean