Colgate Sensitive Pro-Relief Repair and Prevent Toothpaste is formulated with Pro-Argin technology and provides instant and lasting sensitivity relief*. With regular use, it reduces teeth sensitivity and helps to strengthen gums and prevent gum recession. Seals & Repairs. Pro-argin™ technology helps to seal and repair the sensitive areas of teeth. Sealed channels protect against painful stimuli cause by hot, cold or sweet. Prevent sensitivity coming back. Sealed channels protect against pain for instant relief, and with regular use provide lasting protection to prevent sensitivity from coming back. Helps to strengthen gums and prevent gum recession. Gum recession can expose the channels that lead to tooth's nerves and increase your chances of sensitivity pain. With regular use, it helps to strengthen gums and prevent gum recession, addressing a key cause of sensitivity. * with direct application and daily brushing