Clinical studies have shown that LISTERINE Advanced White Milder Taste Mouthwash, 500ml, which has zero alcohol in it, can help you get whiter teeth in just one week*. In a laboratory trial, LISTERINE Advanced White Milder Taste cleaned using potent Essential Oils that helped destroy 99% of the bacteria that form plaque. With non-abrasive whitening technology that doesn't damage the enamel, LISTERINE Advanced White Milder Taste whitens teeth and guards against new stains. LISTERINE Advanced White Milder Taste fortifies teeth with fluoride to remineralize and strengthen them while forming a shield to help prevent future stains. Use after brushing in the morning and evening is very efficient.