GHK Copper Peptide Australia GHK Cu 50mg Peptide Let's take a short break from K beauty and revisit an OG skincare ingredient that has decades of research behind it: Copper peptides. One serum that highlights this ingredient beautifully is the @deciem GHK Cu 50MG Copper Arma Peptides Trusted Research Supplier GHK Cu (50mg) Paramount Peptides Copper Peptides vs. Retinol: Which Anti Aging Powerhouse is Right for Pure & Cimple