Managing Post Injection Pain After a Week Ghk Cu Painful TikTok How is the GHK CU Peptide Used in Skin Rejuvenation and Anti Aging? Concierge MD LA 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 A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend