GHK Cu Injections in Napa & Sonoma 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 GHK Cu Copper Peptide Serum with Hyaluronic Acid Anti Aging Facial Serum, Deep Moisturizing & What is GHK Cu? GHK Cu (glycyl L histidyl L lysine copper complex) is a naturally occurring peptide in human plasma that: Binds copper ions Acts as a biological signalling molecule Plays a role Copper Peptide (GHK Cu) Supplier Cosmetic Ingredient for Formulators Creative Peptides Copper is a signal not just a mineral. GHK Cu (Copper peptide) is studied for its role in tissue remodeling pathways: Collagen & elastin signaling Skin barrier recovery processes