can any uv light become dangerous on someone skin or eyes or they immune system?

Because local stores like walmart and target are selling those cleaning uv cell phone sanitizer that remove bacteria from anything and I am wondering how much uv light is good for your skins or your eyes or immune system. I know the uv cell phone sanitizer will only clean the stuff you put under the uv lights.

Max Hoopla2021-01-20T18:12:19Z

It can burn you if you get too much.

Matthew2021-01-20T16:59:03Z

Type c germicidal light will kill anything that you expose to the light including your skin including your eyes those that use type c light are aware that this light is absolutely deadly to anything that it touches and take proper precautions not to be exposed to it