2 weeks in on GHK Cu and the glow is REAL., Brighter complexion, More even skin tone, Less breakouts, Softer fine lines, Thicker, fuller hair, This is just the beginning. Consistency is Copper peptide also known as GHK Cu. Im not saying I look younger than 36, but I think I look pretty good for my age. My skin journey has been rigorous working on treating acne flare ups and GHK Cu Peptide Before and After Results Dr Jonas Programs