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 Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Peptides for Hair Loss: What Are They & Do They Work? Peptides are short chains of amino acids that act as cell signaling molecules. In hair care, certain peptides can help support Phases of hair growth Medikemos Clinic