Crest 3D Whitestrips Professional Effects Advanced at-home teeth whitening kit includes 40 Professional Effects Advanced strips and 20 Monthly Express strips for comprehensive whitening treatment. Uses the same hydrogen peroxide whitening ingredient that dentists use, providing professional-level teeth whitening at home. Advanced Seal Technology features a no-slip grip that allows you to talk and drink water while wearing the strips, keeping the whitening gel in place for 45 minutes per treatment.

The Professional Effects strips deliver up to 20 levels whiter teeth and remove up to 20 years of teeth stains. High-performance polymers provide superior adhesion to teeth and clean removal. The strips work by keeping the whitening gel in place against teeth to penetrate stain buildup on and below the surface of tooth enamel. Safe on enamel with guaranteed noticeably whiter teeth results that last 24 months and beyond.

Active ingredients include PVP, PEG-8, water, hydrogen peroxide, acrylates copolymer, sodium hydroxide, and sodium saccharin. Each pouch contains 2 strips, one for upper teeth and one for lower teeth.