Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Set GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? GHK Cu (Copper Peptide) has emerged as one of the most promising regenerative peptides for hair restoration due to its ability to stimulate follicular activity, improve scalp circulation, reduce inflammation, and prolong the Peptide Therapy for Hair Growth: Explore Your Options