What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health 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 Neurogan Health, Kupferpeptid GHK CU, 120 mcg, 60 Tabletten iHerb Are GHK Cu Injections Safe Enough? Alternatives Options Neurogan Health GHK Cu Peptide: What It Does for Body Composition and Metabolic Health