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 Hormone Free Copper GHK+ Facial Serum with Cycloastragenol Male Hair Restoration Before & After with PRF and GHK Cu 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