GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) 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 Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care