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 (Copper Peptide) Provider Supervised Therapy IV Glow Bar GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B While GLP 1 medications help with weight loss and metabolic health, they can sometimes speed up muscle loss, skin thinning, and collagen decline. Thats where GHK Cu comes in., Known as the copper