Ceramide (CERs) is mainly composed of the outermost layer of human skin, the stratum corneum intercellular lipid composition, and its layered structure of cholesterol, fatty acids, can provide a barrier function and water retention function for the skin, and the hair cell membrane complex and epidermal hair cortex formation,
Ceramide (CERs) is mainly composed of the outermost layer of human skin, the stratum corneum intercellular lipid composition, and its layered structure of cholesterol, fatty acids, can provide a barrier function and water retention function for the skin, and the hair cell membrane complex and epidermal hair cortex formation, is also related to the permeability and material diffusion. In recent years, researchers have further clarified the physiological function of CERs (cell death, differentiation induction, etc.), and speculated that CERs may be related to the keratinization of skin and hair. Now there are many with the quasi ceramide hair and skin cosmetic ingredients listed, more in-depth study on the hair cuticle and ceramide, become a research direction for a new type of skin and hair cosmetic raw material.
Ceramide is a generic term for the formation of an amide bond with an amino acid of the base of the sphingosine. Nerve sheath ammonia base types of human and other mammals have two hydrogen sphingosine, sphingosine and 4- two hydroxy hydrogen sphingosine, 6- hydroxy fatty acid is sphingosine; non hydroxy fatty acid, a- hydroxy fatty acid and w- hydroxy fatty acids, they are combined into 12 kinds of nerve amide.
