GHK Cu Peptide Therapy Pricing GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health 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 Subcutaneous Injection Sites and Instructions for Safe Self Administration