Palmitoyl-DL-carnitine chloride is primarily used in research and pharmaceutical applications due to its role in lipid metabolism. It serves as a key component in studies focusing on fatty acid transport and oxidation within cells, particularly in the context of mitochondrial function. This compound is also utilized in the development of drug delivery systems, where it enhances the solubility and absorption of lipophilic drugs. Additionally, it finds application in cosmetic formulations, where it acts as a skin-conditioning agent, improving the texture and hydration of the skin. Its ability to interact with cell membranes makes it valuable in biochemical assays and membrane-related studies.