The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, GHKCu Copper Peptide Therapy Skin & Healing Regeneration Beginner Peptide Stack: BPC 157 Oral + GHK Cu Topical No Injections SNRK GHK Cu Research Compound NeoPeptide Lab GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy