Ceramide is a type of phospholipid with
ceramide as the skeleton, mainly including ceramide phosphocholine
and ceramide phosphoethanolamine. Phospholipids are the main
components of cell membranes. *0%**0% of the sebum in the stratum
corneum is composed of ceramide. , Nerve Chemicalbook amide is the
main part of the intercellular matrix and plays an important role
in maintaining the water balance of the stratum corneum. Ceramide
has a strong ability to associate water molecules. It maintains
skin moisture by forming a network structure in the stratum
corneum. Therefore, ceramide has the effect of keeping skin
moisture.