GHK Cu Peptide: What It Does for Body Composition and Metabolic 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 Do you know what this little blue injection is? It's called GHK Cu aka the Glow Peptide I've always believed in peptides for skincare, but honestly I never thought about GHK Cu Copper Peptide Benefits, Uses & Safety Intra V