Get visibly whiter teeth in just 30 minutes a day. With just 30 minutes a day for 10 days you can reverse years of staining.Crest 3D White Classic Vivid Whitestrips make it easy to whiten teeth and reveal a brighter smile. Using the same enamel-safe whitening agent as dentists use, your smile will be restored to its former glory in just 10 days. 20 teeth whitening strip treatments, each with 1 upper and 1 lower strip. Removes 5 years of tough set-in stains. Visibly whiter teeth with full results in 10 days. Use once a day for 30 minutes. Uses the same enamel-safe teeth whitening ingredients dentists use. A comfortable at home teeth whitening experience. Advanced Seal Technology’s no slip grip stays put so you can talk and drink water while whitening teeth. USE ONCE A DAY FOR 30 MINUTES 1) Peel, 2) Apply, 3) Reveal your whiter smile PVP, PEG-8, Water, Hydrogen Peroxide, Acrylates Copolymer, Sodium Hydroxide, Sodium Saccharin.