bad bruising from ghkcu? : r PeptideDiscussion GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) 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 What causes skin darkening around Copper GHK (Glycyl L Histidyl L Lysine Copper) injection sites? Before you decide to begin using the copper peptide, GHK Cu, be aware it stings and leaves behind big, red welts that then leave a lovely bruise. , In order to reap the glow benefits, you need to Mitigating GHK Cu Injection Pain: Tips and Tricks Gabriel Alizaidy, MD, MS posted on the topic LinkedIn