Powered by HP Complex, our unique formulation of Hydrogen Peroxide, Optic White Pro Series gives you 5X whiter teeth than the leading whitening toothpaste after 1 day. This clinically proven formula contains Hydrogen Peroxide, the same whitening ingredient used by dentists. Plus, innovative ActivShine Technology polishes the enamel surface to reveal next-level shine. Fast-Acting Whitening FormulaPro Series Express White Toothpaste starts whitening after the first brush. That’s thanks to its dual-action teeth whitening formula, which brushes surface stains away while dissolving the tough stains beneath. 85% of people notice a positive difference in their teeth in 7 days when used as directed. After two weeks, this teeth whitening toothpaste removes 15 years of stains. Enamel Safe Teeth WhiteningOptic White Pro Series toothpaste dissolves deep-set stains without compromising enamel health. Designed for no tooth sensitivity, it replenishes enamel with fluoride. With this invigorating mint toothpaste, there’s no need to choose between having a bright smile and safeguarding your enamel.vs. Crest 3D White Advanced silica-based toothpaste. Use as directed.when brushing twice daily for 2 weeks