Features:Get professional whitening results in the comfort of your home absolutely pain-free. The Home Whitening Kit Elite 1 extra syringe includes 20 mL of teeth whitening gel - enough for up to 12 applications - and an LED light to accelerate the whitening process.The custom fit trays adapt to your mouth and allow the whitening gel to coat your teeth evenly. The kit also comes with a retainer case to store your mouth trays after each use.The key whitening ingredient is sodium percarbonate an eco-friendly chemical that together with the other advanced ingredients in our formula will whiten your teeth up to 7 shades without any pain or sensitivity. Made in USA with natural kosher and vegan ingredients.How it works:1. Brush your teeth gently.2. Heat a pot of water till it boils let it sit for 1 minute and then submerge each mouth tray into it for 3-5 seconds.3. Place the mouth tray in your mouth and bite down on it. Let it cool and your mouth tray is now perfectly molded to your teeth. Repeat with second tray.4. Place a line of whitening gel on the inner front surface of the tray and spread it. Repeat with second tray.5. Insert the whitening trays in the mouth and place the light in front of your teeth for 20 - 30 minutes.6. Spit and rinse after use and repeat the next day.Whats included:2 x 10 mL Syringes1 x Set of Custom Fit Mouth Trays1 x Mini LED Light1 x Cardboard Shade Guide1 x Retainer Case to Store the Mouth Trays1 x Multilingual InstructionsIngredients:Glycerin Propylene Glycol Acrylates/C10-30 Alkyl Acrylate Crosspolymer Triethanolamine Sodium Saccharin Mica Mentha Piperita (Peppermint) Oil Sodium Carbonate Peroxide (Sodium Percarbonate) CI 77891