The White Smiles offers Crest 3D Professional Effects Whitening Strips, a pro-strength strip that allows every individual to whiten and a brighter, more dazzling smile in the ease of their own home. Enamel-safe strips wipe away coffee, tea, and wine stains along with tobacco staining, and after only a couple of days provide professional level results. The Advanced Seal Technology keeps the strips comfortably in position, while evenly whitening and will not come off.