This Clean Spearmint flavored fluoride toothpaste for sensitive teeth whitens teeth, offers 24/7 sensitivity relief*, and helps shield tooth enamel against erosion and cavities.This Colgate sensitive toothpaste contains potassium nitrate, a dentist recommended active ingredient for sensitivity relief. Potassium nitrate is clinically proven to offer long-term sensitivity protection.*Colgate Sensitive Whitening Spearmint Toothpaste is designed for daily use and safely removes surface stains for whiter teeth**. Because it’s formulated with 5% potassium nitrate, this sensitive toothpaste offers sensitivity relief that works so you can enjoy cold, hot, and sweet food and drinks. In addition to offering lasting sensitivity relief, this potassium nitrate toothpaste helps repair and protect teeth against the effects of acid erosion and helps prevent tartar buildup**.Help prevent bad breath, cavities, and tartar buildup*** while repairing weakened enamel and protecting against erosion with Colgate Sensitive Whitening Toothpaste.*with twice daily brushing after two weeks of continuous use**vs. a non-whitening toothpaste***with regular brushing