GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Amazon.com: The Ordinary Multi Peptide + Copper Peptides 1%, GHK Cu Anti Aging Serum for Fine Lines and Skin Elasticity, 1 Fl Oz : Beauty & Personal Care 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 The glycyl l histidyl l lysine Cu2+ tripeptide complex attenuates lung inflammation and fibrosis in silicosis by targeting peroxiredoxin 6 ScienceDirect