UV absorbers are functional additives that absorb harmful ultraviolet (UV) radiation and convert it into harmless heat energy, protecting materials from UV damage. They effectively prevent aging, yellowing, and embrittlement, and offer excellent weather resistance and stability. They are widely used in plastics (e.g., agricultural films, automotive parts), coatings, inks, adhesives, cosmetics, and textiles—commonly found in outdoor products, automotive paints, sunscreens, packaging materials, and other applications requiring UV protection.