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 Injectable Team Wellcore Subcutaneous Injection: What It Is and How to Give One Injection Site Pain Genoskin GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) Marla BSN, RN Do you get injection site reactions from your GHK CU? 3 tips to make it better Room temp Use a different injection site Inject Instagram