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 + Vitamin C and Retinol? Heres How to Layer Them! , GHK Cu works wonders for collagen production, but how do you pair it with other skincare powerhouses like Vitamin C or Retinol? If you are using retinol? Add this to your routine! TikTok Everyone's arguing about retinol vs peptides Meanwhile GHK Cu is sitting in the corner quietly doing what the hype products wish they could do. Not anti aging More like pro repair, pro collagen, and pro glow