Abstract: Lysolecithin having bigger HLB, can form system O/W easily, which is thermodynamically stable colloidal system. Preparing system of lysolecithin-based microemulsion containing cholesterol, was made up of cholesterol / lysolecithin / n- propanol, lysolecithin as emulsifier, n-propanol as co-surfactant, cholesterol as oil phase. It was show that the microemulsions are clear, transparent, stable.

Key words: microemulsion, lysolecithin, cholesterol