GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B ZQ II GHK CU Serum infusion by nano tips to remove crow's feet, dark circle, can see remarkable immediate effect within 30min. And ensure at least 3 months effect. Eva Chan GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) GHK Cu 50mg Copper Tripeptide Research Compound 99% Longevity facial with GHK Cu peptide Mrs French