Copper Peptides GHK Cu for Acne Scar Treatment TikTok : & ! Before: A year old scar from breast revision surgery. You can see the redness and fibrous scar tissue. I think everything I did for my scars worked synergistically and helped, but if I had to choose one product, it would be GHK Cu (aka copper peptides)., Now one year later I see the resultsand theyve GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH