It is not as strong as ultraviolet rays in the sun. As long as you don't stand directly under the lamp and don't get in close contact, it will basically not cause harm to human skin.
Secondly, different types of lamps emit different ultraviolet intensities, such as incandescent lamps emit less ultraviolet rays and fluorescent lamps emit more ultraviolet rays.
Ordinary window glass can absorb more than 98% ultraviolet rays in sunlight. The ultraviolet rays in household lamps are all trace. The spectrum of fluorescent lamps is purple, so the ultraviolet equivalent is higher than that of incandescent lamps.
When the fluorescent lamp is turned on, there is a lot of ultraviolet light in the lamp tube, which is very useful for medical treatment. Some gyms also have ultraviolet light.