Misc: Whiter teeth in 1 week. Goes beyond surface stain removal to deeply whiten. Enamel safe. Whiter teeth in 1 week. Optic White toothpaste is clinically proven to whiten teeth with peroxide. It goes beyond surface stains unlike ordinary toothpastes. Whiter teeth start in 1 week. For best results, use as directed for 4 weeks. Brush regularly with Colgate Optic White. Save Water: www.colgate.com/savewater. Turning off your water while brushing your teeth can save up to 4 gallons of water each time you brush! Gluten free. www.colgateopticwhite.com. Made in Mexico.