A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget GHK Cu Topical Cream Dubai In Home GHK Cu Tripeptide Injection Book Private Therapy 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