Principle: Use the principle that the light-effect coagulant in the nail polish glue will undergo a curing reaction under ultraviolet light. The lamp for the nail polish is actually an ultraviolet lamp. The wavelength of the ultraviolet lamp used in the nail lamp is generally 320-400nm, which belongs to the range of long-wave ultraviolet rays. It will not cause serious damage to the skin, but it will cause the skin to tan and age.
When doing phototherapy manicure, the skin becomes thinner after exfoliation. If you don't apply sunscreen, it will be more likely to cause skin aging. Therefore, although the short-term light therapy lamp is harmless, care and maintenance of the hands should also be paid attention to.