Buy GHK Cu Nasal Spray from Peptide Works 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 () 100 , Nasal spray copper tripeptide GHK Cu, Apex Biopharma, 1 bottle * 10 ml * 100 mg GHK cu Copper Nasal Spray Cuvera Peptide GHK CU Cream Concierge MD Physiopep GHK Cu 100mg 10ml Nasal Spray Walmart.com