Copper Peptides Before and After Hair: What to Expect Month by Month HapiPatch GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth. GHK Cu Hair Growth