For the most part, the light’s wavelength may be approximately the same as ours, but the intensity of these small hand-held lights is much lower and therefore will not work as well or as fast. These lights also come with kits using carbamide peroxide, which does not react as well or as fast as hydrogen peroxide gels do with the addition of a light. The light in this case is more of a gimmick than an actual aid to teeth bleaching, and can help cause the price of these take home kits to be higher than need be.