Quickly whiten teeth at home, even when there's no time to plan. An unexpected dinner invite. Last-minute concert tickets. An impromptu girl's night out. No matter what the occasion, all you need is 1 hour to remove years of teeth stains. Get your teeth whiter and brighter for any event. With Crest 3D White 1 Hour Express White strips, you'll see whiter teeth in just 1 hour.