The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, GHK CU Research Peptide Alpha Carbon Labs How to Measure and Inject GHK Cu (Copper Peptide for Skin and Tissue Repair) YouTube Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most Private Label GHK Cu Copper Peptide Serum for Hair Growth Nourishing 10% Formula for Daily Care & Hair Loss Prevention