Misc: Advanced whitening with hydrogen peroxide to deeply whiten. Enamel safe. Whiter teeth in 1 week (For best results, use directed for 4 weeks). Gluten free. Brush regularly with Colgate Optic White toothpaste and Colgate 360 Optic White toothbrush for a whiter smile. SmartLabel: visit smartlabel.colgate.com for ingredient information. Turning off your water while brushing your teeth can save up to 4 gallons of water each time you brush! Save water: www.colgate.com/savewater.