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: What It Does for Body Composition and Metabolic Health WO2019167070A1 Topical copper tripeptide composition and process of preparation. Google Patents GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Product Question] Most effective way to deliver GHK Cu (Copper Tripeptide 1) through skin? : r SkincareAddiction