Gluten free. Strengthen & Replenish: Strengthens enamel 4x better (Strengthens enamel 4x better vs. ordinary fluoride toothpaste after 3 applications in an in-mouth study). Helps replenish natural calcium and other minerals back into weakened enamel, filing in rough spots and making it stronger. Touch & feel: Acid-softened enamel is rough. Healthy enamel is smooth. Did you know? Enamel is the first line of defense for your teeth. But daily eating and drinking can leave enamel rough and weak. Use Colgate Enamel Health toothpaste twice a day for smooth, healthy enamel. Stronger: Contains active fluoride to help replenish natural calcium back into weakened enamel to strengthen teeth. Smoother: Polishes roughened enamel with gentle micro-polishing action so germs are less likely to stick. www.colgateenamelhealth.com. SmartLabel: App enabled scan for more information. Questions? 1-800-468-6502. Save Water: turn off the tap while brushing.