Copper peptides + red light therapy = INCREDIBLE results : r 30PlusSkinCare 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 GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy How Often to Inject GHK Cu PeptidesExplorer Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides