Review on 🦷 Revolutionize your Smile: AutoBrush Teeth Whitening Kit with Dental Grade Blue Light Acceleration and Red Light Gum Therapy - Complete Professional Home System - 30 Whitening Sessions (White) by Guled Hamilton

This kit is simply excellent. The lightening itself seems to work after a few uses, but it was kind of a pain. The gel is fairly easy to apply to teeth with the included application brushes, but the mouthpiece only stays on for 2 minutes and then turns off. It's tiresome to keep track of how often you turn it on. I finally wrote CS how to leave the light on longer and here is the answer I got. When you enable AutoBrush, press the light button and it turns blue. Press the light button again and it changes from blue light to purple or a combination of red and blue light. Hold the light button again and it will turn blue. This blue light should persist for 10 minutes. Hope that helps.