GHK Cu Peptide Serum EQLibrium 7% GHK CU ACCELERANT Platinum Skin Care Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps Products Skin Care Copper Peptide Serums Skin Biology GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect