GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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 Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference GHK Cu Copper Peptide Hair & Scalp Serum PeerJ Potential role of ghrelin in neuroprotection and cognitive function: implications for diabetic cognitive impairment