GHK Peptide Injection and GHK Cu Benefits, Uses ,safety Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed 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 Ever heard of GHK Cu peptide? It's a naturally occurring copper peptide that helps repair tissue, stimulate collagen, and support skin healing. When used in injectable form, it works at a deeper level