Whiter teeth in 1 day with the Optic White Line (With Colgate Optic White Toothpaste, Mouthwash and Toothbrush + Whitening Pen, use as directed. Use Mouthwash prior to Optic White Whitening Pen. For best results continue routine as directed) Actively whitens and seals out new stains (whitens by removing surface stains and helping to prevent future stains) Enamel safe Kills bad breath germs