Kit includes: Pre-Filled Dual Arch Tray(s), 1 Liquid Dam, 1 Cheek Retractor, 2 Vitamin E Oil Applicators, 1 At Home Re-Fill Whitening Syringe. A professional 20-minute in-office whitening system. This easy to use system features a prefilled silicone tray with a combination of professional-strength hydrogen peroxide and carbamide peroxide. Fast acting, yet gentle. This specially formulate gel also contains potassium nitrate and xylitol to prevent sensitivity and dehydration. Patients will love this fast, comfortable, convenient whitening system! Stand up blue/red LED light needed to process within the 15-20 minute session.