Amazon.com: GHK Cu Copper Peptide Serum Anti Aging Face Serum for Skin Firming, Wrinkle Reduction, Hydration & Collagen Boosting, 30ml(1 fl oz) : Beauty & Personal Care GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Cu vs NAD and why they're not the same thing They both get labeled anti aging but they work in totally different ways GHK Cu = skin you can NAD+ vs GHK Cu What's the difference & which one is right for you? Although both treatments are powerful, they don't do the same thing. In our carousel, we break down