Koreana Skin GHK Cu Copper Peptide Mask Revitalizing & Firming Hydrogel Sheet Mask 6 month GHK CU check in Main takeaway: skin transformation takes time. GHK CU peptide binds to copper and activates genes involved in wound healing, collagen synthesis, and skin remodeling. On the face, this translates GHK Cu Peptide Benefits for Skin and Hair LIVV Natural GHK Cu (Copper Peptide) is a naturally occurring peptide in the body that binds with copper to support cell repair and renewal. As we age, our levels decrease and thats where supplementation or