Use once a day for 10 minutes to remove stains from coffee, wine, soda, smoking, and more with light-activated acceleration technology. Effectively whiten your teeth using the most advanced teeth whitening technology and advanced ingredients delivering dental grade results, the same technique you'll find at the dentist, but from the comfort and convenience of your home. Our enamel safe 35% Carbamide Peroxide Formula was designed by a team of leading dental experts to be gentle, yet effective. WHY CHOOSE ISMILE: 5X LED light-activated whitening technology. Removes stains: wine, coffee, soda, & smoking. Comfort mouth tray. 100% customer satisfaction guarantee KIT INCLUDES: (1) Activation Light (batteries included). (3) 3ML Whitening Gel Syringes (mint flavored). (1) Desensitizing Gel. (1) Mouth Tray. (1) User Manual IMPORTANT: To prevent sensitivity or gum irritation, only use .4ml per treatment. Don't overfill the tray with gel. Keep gel off gums.