Colgate Optic White Expert White Whitening Toothpaste 75 ml Designed to Reverse Years of Yellowing*. With same ingredients dentists use.Enamel Friendly For Daily Use.* Clinically proven stain reduction ** For best results, use as directed for 4 weeks Directions for use: Brush thoroughly with a Colgate toothbrush, at least twice a day, or as directed by a dentist or physician. Children 6 years and under should have adult supervision and use only a pea sized amount to minimize swallowing. In case of intake of fluoride from other sources consult a dentist or doctor. Do not swallow. Spit and rinse thoroughly after brushing.colgate toothpaste is the best product for teeth whitening ever .