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 Cu Peptide: Hair Regrowth for Thinning & Alopecia GHK CU Apollo Peptide Sciences The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget PEPTIDE Mousai Wellness Center