GHK Cu Copper Peptide Benefits, Uses & Safety Intra V Fraley Whats the difference between GHK Cu (copper peptide) as a topical cream vs an injection? In this video I break down: What GHK Cu is and why its used in anti aging skincare What results 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, Do you know what this little blue injection is? It's called GHK Cu aka the Glow Peptide I've always believed in peptides for skincare, but honestly I never thought about GHK Cu for Skin: SIGNAL's Guide to Rejuvenation