Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Glow Up Patches, for glowing skin & hair growth Hapi Patch HapiPatch Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how