GHK Cu Pinnacle Performance Labs 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, Just started GHK Cu? Here's what to expect This isn't an overnight peptide, it builds Weeks 12: You may start noticing small shiftsskin feels a bit smoother, nails a little stronger Weeks 34: The Benefits & Risks of GHK Cu (WATCH BEFORE TAKING) GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B