GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu copper peptides calm, repair, strengthen If your skin often feels: red or reactive irritated even from gentle skincare tight, dehydrated or burning tired and sensitive Experiencing itching & burning from your GHK CU peptide injections? Try these to hacks:, 1. Use a longer syringe to penetrate deeper into the fat cells. , 2. Dilute the copper. Here I show you how to GHK Cu Topical Cream Why Does Ghk Cu Sting TikTok