Product Description: 1. Good nursing effect: It is suitable for yellow and black teeth caused by various external fuzzy colors, such as smoke spots, tea spots, coffee, cola, red wine, colored food and bad living habits. 2. Safety Materials Safety: The materials of this oral care kit are environmentally friendly and harmless. Quality inspection After quality inspection, it is safer to use. 3. Use of color card holder: This set is equipped with gel, which is more convenient to use than color card and dental tray, and has better whitening effect. How to use: Step 1: Soak the tray in warm water at about 50 degrees Celsius for 10 seconds. When the tray is soft, remove it. Step 2: Place the tray on the top line of the teeth and press with your fingers to bring the tray and teeth together for about 15 seconds to form the tray. The tray is made in this way, the tray to the bottom line of the teeth. Cut off any excess from the tray. Step 3: Cut the excess from the tray. Squeeze the gel into the tray and put it in your mouth. Step 4: Put the LED light in your mouth, turn it on for 10 minutes, remove the gel for 5 minutes and brush your teeth. Specifications: Application Same application: Adult Feature: Mint scent Weight: 126 g The package includes Whitening Gel (3ml/portion) x10 Thermoformed single arc tray x2 Mini Cold Whitening Lamp x1 Professional 3D Dental Shadow Guide x1