The 1st Connected Tooth Whitening Kit 100% effective 100% reliable 100% easy to use Perfect for anyone who wants to find a bright white smile in 20 minutes. Tips for use: On clean, dry teeth, apply the whitening gel with the brush, in a generous amount. Connect the LED gutter to the phone or computer. Switch on the LED tray and start the whitening session. The gutter turns off automatically after 20 minutes. All that remains is to rinse your mouth and the tray. The box contains: — 1 connected gutter — 3 whitening pens (2ml of gel per pen) — The tips compatible with i-Phone/Android/Type C/USB Whitening gel ingredients: Propylene Glycol, Glycerin, Carbomer, Azelaic Acid, Urea Peroxide, Aqua, Mentha Piperita Oil. Material: silicone tray Washable with water Weight: 256 gr Made in: Gel made in French Laboratory. Led made in China.