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 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 In under 2 weeks my wrinkles are softened, my skin is firmer, and my glow is restored. Aging may be inevitable, but looking it is optional! You can neglect your skin Ghk Cu Skin Transformation Before And After