Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum 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 7% GHK CU ACCELERANT Platinum Skin Care Methylene Blue Sterile Solution Wells Pharmacy Network GHK Cu (Copper Peptide): What the Data Actually Suggests GHK Cu is a naturally occurring tripeptide (glycyl L histidyl L lysine) bound to copper, identified in human plasma and known to decline with age. Current literature has explored