Copper Peptide Regenerating Serum for Glowing Skin and Hair 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 Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Copper Peptide (GHK Cu) 2% Recovery Serum DIY 100% Copper Peptide Solution for Skin Hair Nails,Copper GHK cu Tripeptide 1 GHK Cu Peptides Benefits for Anti Aging Skin Rejuvenation How to Use With Micro Infusion