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, And we're back with our GHK Cu peptide injection pen. Here's how to use it, and where. More coming soon ;) #ghkcu #ghkcucopperpeptide #peptides GHK Cu Peptide Side Effects: Safety, Dosage Chart & WADA Forged Alpha GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B The Peptide Craze Ground Truths