Efficacy:Ceramides (CERs) exist in all eukaryotic cells and play an important role in regulating cell differentiation, proliferation, apoptosis, aging and other life activities. Ceramide, as the main component of the intercellular lipids in the cuticle, not only acts as the second messenger molecule in the sphingomyelin pathway, but also plays an important role in the formation of cuticle of the epidermis. It can maintain skin barrier, moisturize, anti-aging, whitening and disease treatment, and can be used in daily, medical, food and other aspects,