The teeth and gums are coated with a thin, colorless film that can adhere to plaque and tartar, causing the teeth to turn yellowish. This mouthwash promotes the action of natural whitening, allowing the maintenance of the natural color of the teeth thanks to the effectiveness of the plant extracts of the lichen of Iceland or the arctic lichen and the lichen of the beard. Zinc chloride and sodium citrate have an anti-tartar action, preventing the precipitation of insoluble salts, while the pleasant aroma of Piedmont mint has a refreshing action.