Injectable Peptides for Anti Aging? A Dermatologist Explains GHK Cu GHK Cu Peptide Benefits (And a Few Risks) Explained GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has Four reasons this serum belongs in your routine. GHK Cu Peptides that firm and support collagen renewal. Barrier support to keep your skin healthy and resilient. No injection. No needles. No clinic visit. GHK Cu Youthful Skin, Healthy Cells, Vibrant You. Peptide GHK CU Cream Concierge MD