Cosmate®NANA ,N-Acetylneuraminic Acid, also known as Bird’s nest acid or Sialic Acid, is an endogenous anti-aging component of the human body, a key component of glycoproteins on the cell membrane, an important carrier in the process of information transmission at the cellular level. Cosmate®NANA N-Acetylneuraminic Acid is commonly known as the “cellular antenna”. Cosmate®NANA N-Acetylneuraminic Acid is a carbohydrate that exists widely in nature, and it is also the basic component of many glycoproteins,glycopeptides and glycolipids. It has a wide range of biological functions, such as the regulation of blood protein half-life, the neutralization of various toxins, and cell adhesion. , Immune antigen-antibody response and protection of cell lysis.