10 Syringes of 44% Teeth Whitening Gel, 2 Mouth Trays, LED, u0026amp; 1 Shade GuidenLED light gently heats up the gel acting as a catalyst for the reaction with the tooth enamel.n100% Satisfaction Guaranteed, Made in USA, All products sent straight from the manufacturer to insure freshness.nWhite Teeth Global is a copyright protected brand.nThis branded WHITE TEETH GLOBAL product is a perfect system to see great results whitening your teeth at home. The kit comes with everything you need included 10 syringes of gel (enough for over 100 applications), 2 mouth trays (for upper and lower teeth), a tooth shade guide to track your progress. White Teeth Global is a copyright protected brand.