Genesis offers the first LED (Light Emitting Diode) system that is inserted inside of  the mouth for ultimate cosmetic teeth whitening. With the Genesis system there is no heat, no sensitivity, no cheek retractions, no rubber dams, no saliva drip, no gagging, no long waiting, and no pain. The Blue LED light has been proven to  be safe and uses less time to promote whitening without softening enamel.