Palmitoyl-L-carnitine is widely used in research to study mitochondrial function and fatty acid metabolism. It plays a key role in transporting long-chain fatty acids into the mitochondria for energy production, making it valuable in understanding metabolic disorders and energy dysregulation. In the field of pharmacology, it is utilized to investigate drug interactions and the effects of compounds on lipid metabolism. Additionally, it is employed in studies related to cardiovascular health, as it helps assess the impact of fatty acid oxidation on heart function. Its application also extends to skincare research, where it is explored for its potential to enhance cellular energy and improve skin barrier function.