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 Drip Gym DripGym GHK Cu Copper Peptide Neck & Face Serum GHK Cu Peptide Foundry Premium Research Peptides GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution Copper Peptide GHK Cu for Sale Stanford Advanced Materials