Now, whitening your teeth is easy! Remove 10 years of stains in just 3 days with the Colgate Optic White Comfort Fit LED Teeth Whitening Kit! Fueled by indigo wavelength technology, the LED device amplifies the hydrogen peroxide serum for exceptional whitening results. The enamel safe serum is designed for no tooth sensitivity and the lightweight, flexible LED device molds to your mouth for uniform whitening, so you dont have to sacrifice comfort when it comes to whitening your teeth! The combination of the flexible LED whitening light and Optic White Overnight teeth whitening pen helps you whiten your smile effectively to give you teeth stain removal that deeply whitens. Light, portable and easy to use -- just plug it into your smartphone (iPhone or Android) and use it for 10 minutes a day for 10 days, and get ready for dramatic results! With Colgate Optic White, you'll always have the confidence to soak up everything you want in life without worrying about it soaking into your teeth. Go ahead and live your life to the brightest!