GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous Topical GHK Cu: Skin Benefits, Best Forms, and Where to Buy 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