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 How to Inject Peptide Based Medications (Subcutaneous Method) Hone Health Why is the injection site painful after administering GHK Cu (Glycyl L Histidyl L Lysine Copper) 2mg mixed with normal saline? GHK Cu Injectable Team Wellcore GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health