Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides Hair cycle: Anagen phase, catagen phase and telogen phase Download Scientific Diagram 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 Stages of Hair Growth Plus How to Maintain Hair Health in Every Stage