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 a growing body of peer Copper Peptides vs. Retinol: Which Anti Aging Powerhouse is Right for Pure & Cimple Copper Peptides & Retinol Can They Be Used Together? Yes, you can use Copper Peptides & Retinol just be smart about it! Retinol = speeds up cell renewal Copper peptides = support Retinol Alternatives: Why Peptide Based Skincare Is the Future of Anti Why You Shouldnt Mix GHK Cu with AHA, BHA, or Retinol, If youre using a GHK Cu (Copper Peptide) in your skincare routine, layering it with strong actives like AHA, BHA, or retinol may actually