A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend GHK Cu Copper Peptide in LA 3,356+ Reviews 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 Everything you need to know about GHK Cu WHAT IS IT? A copper peptide your body naturally produces but production drops by 60% by age 60. It's one of the most