GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Helloskin GHK Cu 1% Triple Peptide Regenerative Serum GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu 50mg 100mg Copper Peptide (RUO) Tide Labs Tide Labs