A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend 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 Copper Peptide Skin & Healing Beverly Hills Just started GHK Cu? Here's what to expect This isn't an overnight peptide, it builds Weeks 12: You may start noticing small shiftsskin feels a bit smoother, nails a little stronger Weeks 34: Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms