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 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 Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size