Product Description:Instantly visible whiter teeth. Clinically proven whiter teeth from the first brushing. Enamel friendly/for daily use. Instantly visible whiter teeth* *The formula contains clinically proven optic brighteners Brushing activates them to generate a blue foam that provides a temporary effect Leaving your teeth looking whiter right from the first brushing. Continued use provides you with a progressive whitening action and gives you long lasting whiter teeth.