Copper Peptides for Skin: The Science, Benefits, and Best Practices Hubmed GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference