Anti Aging Skincare Retinol & GHK Cu Peptide Solutions Beyond Basix Cu Ghk Etsy Copper Peptides for Skin: What GHK Cu Does and How It Compares to Retinol I was super skeptical because I've literally tried everything Retinol destroyed my skin. Vitamin C oxidized and stung. Four different peptide serums and nothing actually worked. Then I tried GHK Cu. 6 weeks Copper Peptides vs Retinol: Do You Need Both? Nubeean Noosa 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