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, What are the guidelines for using GHK Cu (Glycyl Histidyl Lysine Copper) peptide in patients with underlying health conditions for wound healing and cosmetic applications? Arctic Peptide Research Grade Peptides for Performance & Recovery Europe AHK Cu (Copper Tripeptide 3) Ingredient Guide Nubeean Noosa Ghk cu and skin peptides (topical) Skin regeneration and wrinkle reduction Longevity Protocols