Used twice daily, Listerine® advanced white milder taste is clinically proven to whiten teeth in 1 week. With a unique formula:Powerful Essential Oils kill 99% of germs that cause plaque*. Cleans the tooth surfaceWorks effectively with dual action: removes tough stains and prevents future stainsNon abrasive whitening technology that does not harm the enamelWith fluoride to remineralised and strengthen teeth*In a lab studyZero alcohol, For whiter teeth in just 1 week, Dual action: removes tough stains and prevents future ones forming without harming the enamel