GHK Cu Peptide Copper Peptide Research Beyond Peptides GHK CU: Secrets of Hair Growth with Copper Peptide GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule GHK Cu 50 mg Copper Peptide Research Grade PRG