GHK Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible 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 Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit Subcutaneous Injection Sites and Instructions for Safe Self Administration Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed