Used in liposomal drug delivery systems to improve membrane fluidity and stability. Enhances cellular uptake of encapsulated therapeutics due to its natural presence in cell membranes. Commonly applied in cosmetic formulations for skin barrier repair and moisturization. Serves as a structural phospholipid in research models of biological membranes. Supports membrane protein function in reconstituted systems. Also utilized in the development of lipid nanoparticles for mRNA and vaccine technologies.