CB12 White is scientifically proven to help whiten teeth after two weeks when used twice a day after brushing, CB12 White helps to reduce discolouration of the teeth and protects them from the formation of new stains thanks to its active ingredient. Helps reduce staining particles that cause teeth discolouration and protects against new stains. Includes 0.05% sodium fluoride, an ingredient proven to strengthen your enamel with daily use.