GHK Cu Before and After: See Fine Lines and Wrinkles Fade Fast These are the incredible and visible results of GHK Cu phototherapy patches. No injections (that burn so bad) or nose sprays (that stings) or pills needed (affected by your digestion). Just a patch ! Hair Growth Serum Intense with Copper Peptide GHK Cu GHK Cu Peptide Therapy in Raleigh, NC Hair Growth Serum Intense with Copper Peptide GHK Cu 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