Professional-level* teeth whitening is now at your fingertips with the Colgate Optic White FlexLight LED Device. - Our hydrogen peroxide serum works with the indigo LED whitening device to give you dramatic whitening results in just 10 minutes a day*. The enamel safe formula is designed for no tooth sensitivity^ and the lightweight, flexible LED device moulds to your mouth, so you don't have to sacrifice comfort when it comes to whitening your teeth! Light, portable and easy to use - just plug it into your smartphone (i - Phone or Android) and use it for 10 minutes a day for 10 days, and get ready for dramatic results! *There are just 3 easy steps:1. Apply the serum to your teeth using the whitening pen.2. Whiten for 10 minutes using the LED device.3. Enjoy a whiter, brighter smile! *Get the most out of your whitening experience with the Colgate Connect App! Set reminders, track your treatments, get whitening tips, earn rewards and more! - Optic White FlexLight Whitening Kit includes:- 1 x Flexible LED Whitening Device- 1 x Pen with Hydrogen Peroxide Teeth Whitening Serum- 1 x USB-C to i - Phone Adaptor - When you've finished your 30 Treatments^, simply refill by purchasing another Optic White Overnight Pen for another 30 Treatments^!! Teeth Whitening Tips:- By dabbing or drying your teeth with a tissue before use, you allow the hydrogen peroxide concentrated film to best form on your teeth.- 1-2 drops of serum is enough for up to 4 teeth.- Leaving the serum on overnight allows for optimal results.. ENJOY A WHITER, BRIGHTER SMILE*10 minutes a day for 10 days. Use as directed. Individual results may vary. ^Varies based on individual use.