The yotuel pharma B5 whitens teeth by combining special low corrosion silicon form (36RDA) and natural enzymes. This combination helps to reduce external stains, plaque, and tartar without damaging your enamel. Contains 100% active fluoride and xylitol proven to fight decay. It contains no chemical detergents to not cause ulcers in the oral cavity. It offers a non-foaming formulation. PH-neutral so as not to hurt the enamel with Vitamin B5 helps the sensitive mouth and gums and promotes healing.