Sensodyne Pronamel Intensive Enamel Repair Toothpaste for Sensitive Teeth is Pronamel?s most advanced enamel care formulation, clinically proven to actively reharden and strengthen enamel to protect teeth from acid erosion. This enamel repairing toothpaste helps minerals penetrate deep into the enamel surface to repair microdamage, then rebuild and reharden enamel for strong, healthy teeth. Sensodyne Pronamel acid erosion toothpaste is made with potassium nitrate and sodium fluoride, protecting you against cavities and damage caused by exposure to everyday acidic foods or stomach acid. Brushing twice a day with this Extra Fresh toothpaste 4 pack protects your teeth from pain triggers, providing ongoing sensitivity protection and relief, with a refreshing taste for fresh breath. Build a stronger foundation with Pronamel, so your teeth can look and feel your best.