... Definition: The sphingosine of the N-acyl derivatives of fatty acids by a member of the carboxyl group of the amino sphingosine formed ... disease patients in the cerebellum, kidney, saving a great deal of ceramide. 2, ceramide is effective moisturizing agent, a cell ... is a lipid soluble substance, it constitutes the physical structure of the stratum corneum of skin similar to quickly penetrate the skin, ...