Transform Your Skin with GHK Cu Benefits GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B 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: Time for a little GHK CU update for the people who are interested. It's day 9. I took a little break on day 5 just so my body didn't get too 'used' to 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,