GHK Cu True North Labs 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference Dr Paul skipped spending thousands of $$$ for injectable peptides. He is spending less than $90 mo with our patch, activating his own GHK Copper Peptides! The changes in his skin and complexion