Experience Advanced Seal TechnologyThink your whitening toothpaste is giving you the whitest smile you can get? Think again. Crest 3D White Glamorous White Whitestrips can remove up to 10 years of tough, set-in stains and are the only whitestrips accepted by the American Dental Association. Advanced Seal Technology helps the strip to mold to the unique shape of your teeth and also come off cleanly and easily. Their no-slip grip means the strips stay put until you take them off, allowing you to talk and even drink water while whitening your teeth. Using them just once a day for 30 minutes elevates your whiter smile to the next level.