With fluoride. Br br rapid and lasting relief. Br br clinically proven pro argin™ formula. Br br freedom to forget about the pain of sensitive teeth! Br br open tubules are the pathway to sensitivity pain. Br blocked tubules protect against pain from sensitivity. Br br where does sensitive tooth pain come from? Br receding gums and damage to your enamel can expose thousands of microscopic channels which lead to your tooth's nerve centre. When your teeth make contact with something hot, cold or sweet, sensations are carried down these channels directly to the nerves, causing pain. Br br how does colgate sensitive pro relief™ work? Br most other sensitive toothpastes primarily numb the pain. Br colgate sensitive pro relief™ works by plugging the channels that lead to sensitive tooth nerves, to block the pain. Br with regular use, it builds a long lasting protective barrier that acts like a seal against sensitivity. Br br br an exclusive pro argin™ formula with a new technology that dental professionals have started using on their patients to provide sensitivity relief. Br