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, Peptide Therapy for Pain Management and Healing Core Medical & Wellness GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK CU Beverly Hills Rejuvenation Center Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics