What exactly are phototherapy nail art lamps?

At the moment, phototherapy is mostly used in manicure, where the light-effect coagulant in nail polish gel undergoes a curing reaction when exposed to ultraviolet radiation. The lamp that we use for manicure is actually an ultraviolet lamp. The wavelength of the ultraviolet lamps used in manicure lamps is typically 320-400nm, which belongs to the long-wave ultraviolet ray range. It will not cause significant skin damage, but it will cause the skin to tan and age. 

LED phototherapy lamps are more effective than UV and other lamps at protecting the skin and eyes! Because nail light lamps have a longer wavelength than UV lights, it takes about 30 seconds to dry a nail polish with LED lights, whereas regular UV lights take 3 minutes. LED lights will reduce the burning pain caused by UV lights for manicure enthusiasts whose nail surface is relatively thin. UV lamps can dry all phototherapy gels and nail polishes, but LEDs can only dry nail polish and not phototherapy gels. UV lamps are, therefore, slightly more versatile. There are now lamp machines that combine UV and LED lamps. If you require both nail polish and phototherapy glue, you can think about it.