Does it work? Maneup GHK Cu hair growth serum : r tressless 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 Took a huge leap : r HairTransplants Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum 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