Whitening your teeth is easy with the Colgate Optic White ComfortFit LED Teeth Whitening Kit! Remove 10 years of stains in just 3 days with this teeth whitening kit. Fueled by indigo wavelength technology, the LED device amplifies the hydrogen peroxide serum for exceptional whitening results. The serum is safe on tooth enamel and is designed to deliver results with no tooth sensitivity. Plus, the lightweight, flexible LED device molds to your mouth for uniform whitening and a comfortable experience. The combination of the flexible LED whitening light and Colgate Optic White Overnight whitening pen helps to effectively whiten your smile and remove teeth stains. Lightweight, portable and easy to use, this teeth whitening kit with led light plugs into your smartphone (iPhone or Android). Use it for 10 minutes a day for 10 days to see dramatic results!* With Colgate Optic White, you can find the confidence to soak up everything life has to offer without worrying about it soaking into your teeth. Go ahead and live your life to the brightest with this Colgate teeth whitening kit! *When used as directed.