GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Did you know your hair responds to peptides on a cellular level? Peptides like GHK Cu and AHK Cu don't just sit on the scalp, they send molecular signals that stimulate hair follicles, increase Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B AHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair Discovery Size (10 mL)