Copper peptide GHK Cu Wikipedia GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or GHK Cu 50mg Particle Peptides Copper Peptide 10% GHK CU, 5% AHK CU with Oligopeptide 1 Hair Treatment Serum GHK Cu Peptide Therapy Collagen & Skin Renewal GHK Copper Peptide GHK Cu Tripeptide 1