GHK Cu Peptide for Hair Growth: Science, Benefits, and How It Works Private Label Organic Professional Treatment Hair Loss Copper Peptide Hair Growth Serum10% Ghk Cu Hair Growth Serum Your body made this peptide every day until you turned 30. Then it stopped. GHK Cu (copper peptide) is a naturally occurring tripeptide discovered in 1973. At age 20, your plasma levels sit Liposomal Copper GHK (Quicksilver Scientific)