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 Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: GHK CU Peptide Anti Wrinkle Serum Private Label Options Do you know your skin has a built in "Biological Architect"? It's called GHK Cu (Copper Tripeptide 1), and its only job is to tell your cells one thing: REBUILD. It's why your skin snaps