Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu (Copper Peptide) is a naturally occurring substance in the body made of a small protein (peptide) and copper. In simple terms, GHK Cu helps the body repair and renew itself. As we GHK Cu RVMD Peptides People are searching for the GHK Cu pen. Ordering it online. Trying to figure out how to use it safely at home. We looked at all of that and thought: there has to