Cu Peptide Before and After: What to Expect for Skin and Hair GHK Cu Focal Point Vitality 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 Xray and Solution Structures of CuIIGHK and CuIIDAHK Complexes: Influence on Their Redox Properties Hureau 2011 Chemistry A European Journal Wiley Online Library GHK Cu is a naturally occurring copper peptide known for its powerful role in skin repair, hair health, and cellular regeneration. Key Benefits: 1.Boosts Collagen & Elastin Helps improve skin firmness and elasticity.