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, GHK Cu Peptide Copper Peptide Research Beyond Peptides Ghk cu Copper Peptide Chemical Blue To Purple Crystal Powder, Industrial Application at Best Price in Hangzhou Gihi Chemicals Co.,limited Buy GHK Cu Copper Peptide Hair & Scalp Serum at Ubuy Liberia GHK Cu Copper Peptide Serum Private Label Skin Repair GHK Cu Peptide Regenerative & Cosmetic Research