Used in the pharmaceutical industry as a key component in the formulation of liposomes and lipid nanoparticles, especially for drug delivery systems including mRNA vaccines. Serves as a stabilizing agent in cell membrane studies and is essential in the synthesis of steroid hormones, bile acids, and vitamin D. Also utilized in cosmetic formulations to enhance skin barrier function and improve moisturization. Widely applied in research for studying lipid metabolism and atherosclerosis.