GHK CU Apollo Peptide Sciences GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has Copper Peptide (GHK Cu) 2% Recovery Serum Amazon.com: GHK Cu Copper Peptide Serum Anti Aging Face Serum for Skin Firming, Wrinkle Reduction, Hydration & Collagen Boosting, 30ml(1 fl oz) : Beauty & Personal Care PURE GHK Cu 50mg (3 PEPTID MEDI) 99.8% Purity eBay