Colgate Sensitive Instant Relief Repair & Prevent Toothpaste starts blocking sensitivity pain instantly*With its unique pro-argin technology, this sensitive toothpaste will give you instant* relief from sensitivity as it helps to seal and repair the sensitive areas of your teethThis toothpaste for sensitive teeth prevents sensitivity coming back by building a protective barrier that acts like a seal against sensitivity.With regular use this sensitive toothpaste helps to strengthen gums and prevent gum recession, which is a main cause of sensitivity.*For instant relief, apply directly to the sensitive tooth with a fingertip and massage gently for 1 minute, up to twice a day and for children 6-12 years once a week or less frequently.