GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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 Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Biological efficacy of GHK Cu after ionic liquid loading. (a) Cellular Download Scientific Diagram GHK Copper Peptide GHK Cu Tripeptide 1