The sun is the main source of ultraviolet radiation (UVR). Solar UVR cannot be seen or felt and can pass through clouds and loosely woven material. It is a known carcinogen like asbestos and tobacco, and is the main cause of skin cancer in Australia. It can also lead to significant and irreversible skin and eye damage. You must manage health and safety risks in your workplace, including risks associated with exposure to solar UVR.