Molecular crystal structure of the tripeptide GHK Cu. In solution, Download Scientific Diagram GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care Essential GHK Cu Serum: What It Is, How It Works, and Why It Matters f Bacteriostaticwater.com 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 Peptide Therapy for Aesthetics The Villages Infinity Medical Institute GHK Cu is a naturally occurring tripeptide in human plasma. Levels average 200 ng ml at age 20 and drop to 80 ng ml by age 60 (Pickart et al., 2020). That decline tracks with