Monoolein is widely used in the food industry as an emulsifier, helping to blend ingredients that typically do not mix well, such as oil and water, ensuring a smooth texture in products like ice cream and margarine. In pharmaceuticals, it serves as a key component in drug delivery systems, particularly in the formulation of lipid-based carriers that enhance the absorption of poorly soluble drugs. Additionally, monoolein is utilized in cosmetics for its moisturizing properties and ability to stabilize emulsions in creams and lotions. Its biocompatibility also makes it valuable in research for creating model membranes and studying lipid interactions.