Want a whiter smile at home? Choose Crest 3DWhitestrips from the #1 dentist-recommended at-home teeth whitening brand. Get a brighter, whiter smile in just 10 days with Crest 3DWhitestrips Classic Vivid. This 30-minute teeth whitening treatment makes it easy to whiten teeth without leaving the house. It has been validated by the Canadian Dental Association and uses the same enamel safe teeth whitening ingredient as dentists. Try the Classic Vivid teeth whitening kit and get 100% noticeably whiter teeth, guaranteed. Plus, the Advanced Seal Technology’s comfortable, no-slip grip stays put, so you can talk and drink water and chat with friends even while whitening your teeth. Simply apply Crest 3DWhitestrips Classic Vivid for 30 minutes a day for 10 days. This pack includes 20 teeth whitening strips, 10 for your top teeth and 10 for your bottom teeth, to be used over the course of 10 days.