GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B If your GHK injection site gets irritated try this , 1. Dilute it by adding more water to the syringe , 2. Let it sit until it reaches room temperature , Also, make sure youre rotating injection The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline