Used primarily as a photoinitiator in UV-curable inks, coatings, and adhesives, enabling rapid curing upon exposure to ultraviolet light. Also functions as a UV absorber in plastics, sunscreens, and cosmetics to prevent degradation caused by sunlight. Commonly employed in the manufacturing of polycarbonates and other polymers to enhance light stability. Additionally, utilized in some fragrance formulations to extend scent longevity and in nail products to improve film formation and durability.