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 you're Managing Post Injection Pain After a Week What Is GHK Cu Peptide? All About GHK Cu Peptide More Than Just Cosmetic GHK Cu for Skin & Wound Healing: Current Evidence Meeting Point Health 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK