GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Unlocking the Secrets of GHK Cu: The Revolutionary Peptide for Youthfu GHK Cu (copper peptide) used topically is one of the most well studied skin repair peptides. Here's how it helps the skin, in practical terms: 1. Boosts collagen & elastin GHK Cu signals your skin Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare