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 50mg Dosage Protocol PeptideDosages.com GHK Cu Peptide Serum + SNAP 8 15ml Peplogix GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B The research on GHK Cu goes back over 40 years a scientist dedicated his entire career to it. Your body already makes it. You just make about 60% less of it by