Amazon.com: Skin Perfection GHK Cu Copper Peptide Powder 99.7% Pure DIY Copper Peptides Serum for Face and Scalp Cosmetic Grade GHK Cu 1 Gram Creates Up to 100ml for Fuller Hair and Your GHK Cu Cheat Sheet. Thinking about making the switch to Copper Peptides but have a few lingering questions? We've got you. The #superPeptide isn't just another serum it's a biological GHK CU 50mg Vial Copper Peptide Pure Bio Labs Neurogan Health Copper Peptide GHK CU , 120 mcg, 60 Tablets, 0.52 oz (15 g) eBay