Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Order GHK Cu (50mg) Buy Research Peptides Medica Depot 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, Copper peptides + red light therapy = INCREDIBLE results : r 30PlusSkinCare Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size