GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? How GHK Cu Strengthens Hair Follicles to Combat Hair Loss HapiPatch Copper Peptides vs. Traditional Hair Loss Treatments: Which Is Better? HapiPatch Before and after begins with consistency. Our 10% GHK Cu formula is engineered for deep absorption to support scalp health and visible density. GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL)