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 Scalp Solution Empower Pharmacy Where and How to Inject hCG: Step by Step Instructions Dubai In Home GHK Cu Tripeptide Injection Book Private Therapy GHK CU 50 mg LIVV Subcutaneous Injection Sites and Instructions for Safe Self Administration