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 GHK Cu Facial Cream Wells Pharmacy Network Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches