Colgate Sensitive Prevent and Repair Toothpaste provides 24/7 sensitivity protection (with continued twice daily brushing). This sensitive toothpaste contains an advanced dual-action formula that helps prevent painful teeth sensitivity and repairs weakened tooth enamel with continued use. The formula contains potassium nitrate, clinically proven to soothe the nerves in exposed dentin, providing long-lasting sensitivity relief with regular use. This sensitive toothpaste also helps whiten teeth and defend against cavities with regular brushing.