UV filters are substances added to various products, such as sunscreen, sunglasses, and photography lenses, to protect against the harmful effects of ultraviolet (UV) radiation. UV radiation is a type of electromagnetic radiation emitted by the sun that can cause damage to the skin, eyes, and other materials over time. UV filters work by absorbing, scattering, or reflecting UV rays before they can penetrate the skin or cause damage. There are two main types of UV radiation, UVA and UVB, and different filters are designed to protect against each type. Research in the area of UV filters focuses on developing new and more effective filters, understanding their mechanisms of action, and evaluating their safety and efficacy. This research is important for developing products that can provide better protection against UV radiation and reduce the risk of skin cancer and other UV-related health issues.