Crest 3D White 1 Hour Express 14 Strips (7 Packs) Teeth Whitening StripsCONDITION: NEW Use Crest 3D White1 Hour Express Whitestrips for visibly whiter teeth in just 1 hours. For a little time commitment, youll see noticeable results. And you only need to use ONE treatment to get results that last three months. This package includes four separate treatments, enough to keep your teeth white for an entire year. Crest 1 Hour Whitestrips use the Advanced Seal, no slip technology that allows you to talk, drink water and go