Palmitoyl L-carnitine is widely used in research and pharmaceutical applications due to its role in lipid metabolism. It is particularly valuable in studies focusing on cellular energy production, as it facilitates the transport of long-chain fatty acids into the mitochondria for beta-oxidation. This makes it a key compound in investigating metabolic disorders, such as fatty acid oxidation defects and mitochondrial dysfunction. Additionally, it is utilized in the development of therapeutic agents targeting cardiovascular diseases, as it helps improve cardiac energy metabolism. In cosmetic formulations, palmitoyl L-carnitine is incorporated for its potential to enhance skin barrier function and promote healthy lipid balance. Its applications also extend to sports nutrition, where it is explored for its ability to support energy efficiency and endurance during physical activity.