Brighter smiles are ahead with Crest 3DWhite Daily Whitening Serum with LED Accelerator Light. The Daily Whitening Serum swipes on easily and whitens stains deep within the tooth's surface - with virtually no sensitivity. The LED light works to rapidly break down stains and boost your teeth whitening results. Crest 3DWhite Fresh Mint has 15x the whitening power of toothpaste and is enamel safe for daily use, no rinsing or brushing required. Use twice daily. For faster results use up to 4x a day! Just squeeze, swipe, smile, boost and forget the stains. based on one application per dayvs. Crest Daily Whitening Serum alonevs. a Crest sodium fluoride toothpaste