Colgate Optic White High Impact White whitening mouthwash contains 2% hydrogen peroxide to effectively whiten teeth by removing surface stains. This alcohol-free mouthwash (does not contain ethanol) is available in a Sparkling Fresh Mint flavor to freshen breath while whitening teeth and contains Whiteseal technology to help prevent future stains. The mouthwash's action reaches hard-to-brush places, helping to whiten teeth and freshen breath. For an extra white smile, use after brushing with Colgate Optic White toothbrushes and toothpastes.