Used primarily as a plasticizer in polyvinyl chloride (PVC) plastics to increase flexibility and durability. Commonly found in products such as cables, hoses, flooring, and artificial leather. Also used in adhesives, sealants, and printing inks to improve workability and adhesion. Has been used in some cosmetic formulations, such as nail polishes and perfumes, to help dissolve other substances and enhance fragrance longevity. Due to health and environmental concerns, its use in consumer products—especially in children's toys and childcare articles—has been restricted in many regions.