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Ceramides are a family of waxy lipid molecules. A ceramide is composed of sphingosine and a fatty acid. Ceramides are found in high concentrations within the cell membrane of cells, since they are component lipids that make up sphingomyelin, one of the major lipids in the lipid bilayer.

As a bioactive lipid, ceramide has been implicated in a variety of physiological functions including apoptosis, cell growth arrest, differentiation, cell senescence, cell migration and adhesion. Roles for ceramide and its downstream metabolites have also been suggested in a number of pathological states including cancer, neurodegeneration, diabetes, microbial pathogenesis, obesity, and inflammation.

1.cosmetics
Ceramide is the most recent years developed a new generation of moisturizing agent is a lipid soluble substance, it constitutes the physical structure of the stratum corneum of skin similar to quickly penetrate the skin, and cuticle of the water, forming a kind of network structure, to seal in moisture. Increase with age and into old age, exist in human skin will gradually reduce ceramide, dry skin and rough skin, skin type and other abnormal symptoms appear is due toa decrease in the amount of ceramide. So to prevent such skin abnormalities, added ceramide is an ideal way.
2.Functional Foods
Taking ceramide, absorbed in the small intestine and transferred to the blood, and then transported to the body, so that the skin cells to obtain a good recovery and regeneration, but also allows the body's own neural acid biosynthesis.