Colgate Sensitive Pro-Relief Whitening Toothpaste 75ml Colgate Sensitive Pro-Relief Toothpaste contains clinically proven Pro-Argin Formula. Benefits 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. These exposed areas of the teeth can also be prone to discolouration. How does Colgate® Sensitive Pro-Relief? + Whitening work? Most other sensitive toothpastes primarily numb the pain. Colgate® Sensitive Pro-Relief? works by plugging the channels that lead to sensitive tooth nerves, to block the pain. With regular use, it builds a long-lasting protective barrier that acts like a seal against sensitivity. Its low abrasive formula gently and effectively removes stains, helping to restore the natural whiteness of your teeth.Colgate® Sensitive Pro-Relief? + Whitening. An exclusive Pro-Argin? formula with a new technology that dental professionals have started using on their patients to provide sensitivity relief.