Sensodyne Complete protection Toothpaste Action against tooth sensitivity for 24 hours Freshness, Anti-plaque, Whitening and Cavities 2x75ml Sensodyne toothpastes are specifically designed to relieve tooth sensitivity. Teeth are naturally protected by enamel and gums (healthy teeth). But when the enamel erodes or the gums recede, the nerves of the tooth are no longer isolated from external stresses. The tooth then becomes sensitive. Sensodyne Complete Protection works inside the tooth to help soothe the nerve and provide 24-hour protection against tooth sensitivity.