GHK Cu Copper Peptide Neck & Face Serum Your skin deserves advanced care. GHK Cu peptides are part of a new wave of regenerative treatments designed to support healthier, more youthful skin., Want more information? Comment ANTI AGING or GHK Cu (50 MG) Sigma Compounds GHK CU 100MG Peptide Supply GHK Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible