FASTER WHITENING: Crest teeth whitening strips with light work to weaken stains, which enables the ingredients in Crest 3D Whitestrips to remove stains faster vs. Whitestrips alone. CLINICALLY PROVEN: Crest 3D Whitestrips, a leading teeth whitening product, removes years of stains in just 10 treatments. ENAMEL SAFE AND EFFECTIVE: From the #1 dentist recommended at home teeth whitening brand, Crest 3D Whitestrips use the same teeth whitening ingredient that dentists use, are enamel safe, and are highly effective. ADVANCED TECHNOLOGY: Crest's Advanced Seal Technology features a no slip grip that stays put so you can talk and drink water while whitening your teeth. TEETH WHITENING KIT: Includes 1 whitening light and 10 whitening treatments, each with 1 upper and 1 lower strip.