Triple protection. Gently whitens with regular brushing. Reduces sensitivity. Fights cavities. Sensitive Maximum Strength (maximum FDA sensitivity active ingredient). Targets source of sensitive teeth pain. Soothes nerves. Reduces painful sensitivity. Fights cavities. What causes sensitive teeth? When tooth enamel erodes or the gumline recedes, the unprotected tooth surface exposes tiny, microscopic holes that lead directly to nerves inside the tooth. These nerves are the source of sensitive teeth pain. How can Aquafresh Sensitive Maximum Strength help? Aquafresh Sensitive Maximum Strength targets the source of sensitive teeth pain. Its special formula soothes the nerves so that with regular use, you can once again enjoy your favorite foods without the nagging pain of sensitive teeth! Made in the USA.