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, Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health Subcutaneous Injection: What It Is and How to Give One Glow Peptides India: BPC 157, TB 500 & Copper Peptides Guide GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Injectable Team Wellcore