Blue copper peptide is a small molecule protein and is the earliest discovered peptide. To put it more bluntly, this thing is a combination of a polypeptide (tripeptide-1) and a copper ion.

N-acetylneuraminic acid, also known as sialic acid (SA), bird's nest acid, is a naturally occurring amino sugar, which was originally isolated from bovine submandibular adenomucin, hence the name sialic acid. Sialic acid is a nine-carbon monosaccharide derivative containing an amino group, and is a general term for all N- or O-derivatives of neuraminic acid or keto-deoxynonyluronic acid (KDN).

What is ergothioneine?Ergothioneine (mercaptohistidine trimethyl inner salt, ergothioneine, EGT) is a natural antioxidant that can protect cells in the human body and is an important active substance in the body. Natural antioxidants are safe and non-toxic, and have become a research hotspot. As a natural antioxidant, ergothioneine has entered people's field of vision.