Breaking: more people are starting to explore copper peptides over retinol, Not because retinol is bad, but because people are beginning to understand how different ingredients actually work., Copper Peptides for Skin: What GHK Cu Does and How It Compares to Retinol Can I use Retinoids with Vitali GHK Cu Copper Peptides? How do I get t Vitali Skincare 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