Sensodyne Full Protection Teeth Whitening Sensitive Toothpaste is specially formulated to provide relief for sensitive teeth while preventing cavities. This toothpaste contains potassium nitrate and sodium fluoride, which work together to form a protective layer around the nerve, offering 24/7 sensitivity protection against hot, cold, acids, and sweets. With regular use, it helps to maintain strong and healthy teeth, freshens breath, and prevents tartar buildup. The convenient 4-pack ensures you have a supply on hand, making it ideal for daily use. For optimal results, brush for two minutes twice daily.