GHK Cu Topical Gel Transparent Peptides 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 GHK Cu Face Cream All Skin Types Low Price 1200mcg Neurogan Health 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 Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health