Cu Peptide Before and After: What to Expect for Skin and Hair I have had difficulty sleeping during this month of Ramadan. This is the result of 4 weeks of using GHK Cu Peptide. #ghkcu #peptide #looksmax #look #lookism ZQ II GHK Cu Copper Peptide Serum Manufacturer Anti Aging & Skin Repair 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 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK