Ultraviolet (UV) light is an invisible form of radiation that can be harmful to humans and the environment. Exposure to UV light can cause skin cancer, eye damage, and even weaken the immune system. Additionally, UV light can damage materials, such as plastics and fabrics, as well as cause fading and discoloration of artwork and photos. To protect oneself from the dangers of UV light, it is important to wear sunscreen, protective clothing, and sunglasses when outdoors, and to limit the amount of time spent in direct sunlight. It is also important to avoid tanning beds and use protective filters on electronics to reduce exposure to UV radiation.