Colgate Optic White High Impact White whitening mouthwash contains 2% hydrogen peroxide to effectively whiten teeth by removing surface stains. This alcohol free mouthwash doesn't contain ethanol, so there's no burn. This mouthwash is an Icy Fresh Mint flavor that helps freshen breath while whitening teeth. It even contains Whiteseal technology to help seal out and prevent stains. For an extra white smile, use after brushing with Colgate Optic White toothbrushes and toothpastes.