Our Traditional Kit is one of the easiest chair-side whitening kits to use, both for the customer AND the technician. The technician applies a thin coat of the whitening gel to the front of the whitening tray then gives the tray to the customer to insert. Then the technician positions a high-powered teeth whitening light close to the teeth, sets the timer, and the whitening process begins. There is enough gel for 3 generous applications. The kit comes with 44% Carbamide Peroxide Gel.