Quickly whiten teeth at home, even when there's no time to plan. An unexpected dinner invite? A last-minute interview? An impromptu girl's night out? No matter what the occasion, all you need is 1 hour to remove years of teeth stains. Made by the No. 1 dentist-recommended at-home teeth whitening brand, the Crest 3D Whitestrips 1 Hour Express Dental Whitening Kit will give you a 100% noticeably whiter smile, guaranteed. It has been accepted by the American Dental Association and uses the same enamel-safe whitening ingredient dentists use. This at-home teeth whitening pack will make your smile up to 12 levels whiter.