Features: Pen can effectively remove years of stains caused by coffee, tea, wine, soda and more. Fast working: See a difference in merely one minute of using it at home! Use: Recommended to use 2 times a day, even on the go! Easy to use: Durable twist mechanism with soft brush tip that paints each tooth even in the hard-to-reach places. Flavour: Natural mint flavour will keep your mouth feeling fresh! Teeth whitening pen: Get a two-piece tooth whitening pen. Teeth Whitening Pens | Living Social | Living Social