GHKCu Copper Peptide Therapy Skin & Healing Regeneration Injectable GHK Cu: Beginner's Guide to Copper Peptide Ghk Cu Serum Peptides Intensive Serum Tripeptide 1 Ghk Cu Copper Peptide Acetyl Hexapeptide 8 Intensive Repair Reduces Wrinkle G 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 GHK Copper Peptide GHK Cu Tripeptide 1 Copper peptide(GHK Cu) TFA salt 89030 95 5 FC138108