Notice:Welcome to Oubo Dental, we are ready to provide service for you. The link of the item belongs to Oubo Dental, so pls make sure the item that you are going to order is from Oubo Dental for the best quality and service! Description: Teeth whitening using arsenic/gallium semiconductor double narrowband excitation,will effectively reproduce the excitation spectrum in the Young Pioneers excited ribbon avoid the forbidden band transitions, get rid of all ultraviolet and infrared, to prevent heat accumulation, achieve safe, super-active whitening effect. Cold technology can rapidly and most of the hydrogen peroxide activation,increased free oxygen ions penetrate the surface of the tooth,thereby removing the tooth deep colored. Adaptation: 1.Sticky exogenous pigment dyeing(smoke stains,coffee,cola,etc.) 2.Endogenous pigmentation(mild tetracycline,etc.) 3.Fluoride Spain 4.Congenital uneven color 5.Unknown number of incentives for my tooth surface caused by black and yellow change