Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed You started using a GHK Cu peptide serum on your face and now , The things no one tells you., Yes, the injections can hurt like a bitch. , Heres the thing Ive found it works even better topically, Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare