Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health GHK Cu Dosage Calculator, Chart and Guidelines 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 I've been getting a lot of questions about GHK Cu, so here's a quick breakdown. GHK Cu is a copper peptide that naturally occurs in the body and plays a role in skin repair GHK Cu Dosage Calculator and Chart A Z Guide