Dibutyl adipate is a diester formed from butanol and adipic acid. It is a clear, oily liquid primarily used as an emollient, solvent, and plasticizer. In cosmetics and personal care, it provides a light, non-greasy feel and enhances the spreadability of formulations. It also acts as a solubilizer for active ingredients and improves the flexibility of film-forming agents. Due to its versatility, it is widely employed in skincare, sunscreens, and hair care products.