Copper TriPeptide 1, A miracle ingredient that helps restore hair growth from the roots. Try KERAGENE Hair Growth Booster serum with GHK Cu aka Copper TriPeptide 1 in its more effective form to accelerate hair GHK CU Topical & Sub! : r Peptidesource 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 GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B