GHK Cu Copper Peptide Neck & Face Serum The GHK Cu Peptide: Benefits, Uses, and Why it's Known as the Regenerative Copper Complex GHK Cu Face Serum 1200MG Lab Tested & High Potency Neurogan Health Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B