There are two types of LED Nail Polish Lamp, one is UV lamp and the other is LED lamp. The main peak wavelength of UV light is =370nm, which has good drying, sterilization and disinfection effects. Generally speaking, a nail lamp has four tubes, one is 9W. Please change the tube regularly every six months, watch your eyes and don't look directly into the UV tube. Use according to the relevant instructions of the gel making manual or the UV lamp, do not shorten or use them overtime, so as to maintain the best results.