GHK Cu Peptide Before and After Results 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 GHK Cu Before and After: See Fine Lines and Wrinkles Fade Fast GHK Cu copper peptides calm, repair, strengthen If your skin often feels: red or reactive irritated even from gentle skincare tight, dehydrated or burning tired and sensitive