GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK CU (Copper Peptide Serum) NovaNAD+ 7% GHK CU ACCELERANT Platinum Skin Care 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 Professional The results speak for themselves. GHK Cu Peptide Serum by NanoSkin. Copper peptides, deep hydration and barrier support, all in one daily serum. Your skin deserves this. Facebook