Rinse your way to an instantly whiter smile! Enamel-safe Luster NOW! Mouthrinse contains Bluverite, a unique formulation that creates the optical effect of whiter teeth that lasts for hours. Will whiten teeth and remove stains over time with daily use. Safe for daily use. Contains Bluverite, a proprietary formula that creates the optical effect of whiter teeth. Whitens teeth after just one use -- results last for hours. Removes surface and deep stains with daily use. Safe on enamel and dental restorations. Use whenever your smile needs a boost!