Hexapeptide-9 can be composed of six amino acids and is a very stable collagen peptide. The structure of this peptide is present in the structure of collagen Ⅳ and ⅹVII (two key base membrane collagens) in the human body. Hexapeptide-9 shows a comprehensive and significant anti-wrinkle repair effect due to the presence of this structure, and has a very unusual effect on the repair of acne marks (refer to the relevant literature)
