GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more Here's what it can do: Boost collagen for smoother, firmer skin Anti aging Peptide Ointment (Cream) 50ml BioWell GHK Cu Copper Peptide Skincare Bundle RegenMed Direct GHK Cu Peptide Progress: Week 3 Results Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin