Didecanoyl phosphatidylcholine is widely used in the formulation of liposomes for drug delivery systems, enhancing the solubility and bioavailability of poorly water-soluble drugs. It serves as a key component in pulmonary surfactants, improving lung function in respiratory distress syndrome. In cosmetic products, it acts as an emulsifier and skin-conditioning agent, providing moisturizing and stabilizing effects. Additionally, it is utilized in research as a model phospholipid to study membrane dynamics and lipid-protein interactions. Its biocompatibility and ability to form stable bilayers make it valuable in various biomedical and industrial applications.