This whitening mouthwash helps remove surface stains and makes your teeth brighter. It contains fluoride, which helps strengthen teeth and prevent cavities. Additionally, it includes una blend of natural extracts that soothe gums and refresh breath.|| Use after brushing your teeth in the morning and evening. 1) Pour 20 ml (4 teaspoons) into a glass. 2) Rinse your mouth thoroughly for 30 seconds. 3) Spit.