The opening of the dentinal tubules caused by bare necks or loss of enamel leads to dentinal hyperesthesia. In patients with sensitive teeth, contact with cold or sugary foods and liquids can trigger short, fleeting sensations of pain. The PRO-ARGIN technology contained in elmex® SENSITIVE PROFESSIONAL WHITENING toothpaste deeply closes the open dentinal canaliculi and thus eliminates the cause of the pain. Used regularly, it forms a long-lasting protective barrier that acts as a bulwark against sensitivity and restores the natural whiteness of your teeth.