Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply Biossance Squalane + Copper Peptide Rapid Plumping Serum Peptide Labz Copper Peptide 12% GHK CU Serum, Hyaluronic Acid, Anti Aging, 1 fl oz Walmart.com Am+Pm 5% B5+GHK Cu Hydrating Serum Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches GHK CU 50mg Vial Copper Peptide Pure Bio Labs