Crest 3DWhitestrips Brilliance White removes over 15 years of stains with a comfortable, no-slip teeth whitening experience. The Advanced Seal Technology's 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. Choose Crest 3DWhitestrips Brilliance White from the #1 dentist-recommended at-home teeth whitening brand and get noticeably whiter teeth, 100% guaranteed. It has been accepted by the American Dental Association and uses the same whitening ingredient as dentists. This enamel-safe, at-home teeth whitening kit will make your smile 9 levels whiter. Simply apply Crest 3DWhitestrips Brilliance White for 30 minutes a day for 16 days. This pack includes 32 teeth whitening strips, 16 for your top teeth and 16 for your bottom teeth, to be used over the course of 16 days.