Improve tooth color: cold light can improve tooth discoloration caused by smoking, coffee, tea, red wine, congenital, genetic and drugs. 3 color lighting: 3 color teeth whitening machine for you to choose from, which is a safe and reliable method for teeth whitening without side effects. Angle adjustment: teeth whitening cold light adopted gooseneck tube design, so you can freely adjust the angle to whiten teeth, which is easy to operate. Cooling fan: the teeth whitening light has adopted a quiet and efficient fan to achieve the best cooling effect, and with a sound effect, more convenient for doctors to use. Safe to use: Teeth whitening lamp with silicone face mask, safe and harmless, effectively prevents infection, suitable for home and hospital use Function: 1. Improve the color of teeth: cold light can improve tooth discoloration caused by smoking, coffee, tea, red wine, congenital, genetic and drugs. 2. 3 color lamps: 3 color teeth whitening machine for you to choose from, which is a safe and reliable method for teeth whitening without side effects. 3. Angle adjustment: teeth whitening cold light adopted gooseneck tube design, so you can freely adjust the angle to whiten teeth, which is easy to operate. 4. Cooling fan: the teeth whitening light has adopted a quiet and efficient fan to achieve the best cooling effect, and with a sound effect, more convenient for doctors to use. 5. Safe to use: Teeth whitening lamp with silicone face mask, safe and harmless, effectively prevents infection, suitable for home and hospital use. Specification: Item Type: Light for teeth whitening Material: plastic, silicone Frequency: 50 to 60 hz Working time: 0 to 30 minutes Wavelength: Blue light 440 to 480nm Red light 605 to 645nm Purple light 375 to 415nm Voltage: 100-240V Application: Adhesion of external pigments (tobacco, coffee, cola, etc.) Endogenous pigmentation (mild tetracycline teeth etc.) Tooth fluorosis Congenital uneven tooth color Suitable for unknown cause of the black and yellow tooth surfaces Package List: 1 x host 1 x Power Adapter 1 x Protective Silicone 1 x manual Note: Cold whitening light is sometimes postoperatively sensitive, but most postoperative sensitivity will disappear within 1 to 2 days. However, the structure of teeth after whitening will not change much after observation under the microscope, and long-term tracing will not cause tooth damage, so it is a safe and reliable method of bleaching. It is best to have a veili