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 AHK Cu Copper Peptide Hair Growth Study (2007) Plain Language Summary Hairgenetix GHK Cu Copper Peptide for Hair Loss: Results, Mechanism, and What to Expect Copper Peptides as Turn Key Hair Loss Treatment A Comprehensive Over Maneup Peptide Therapy for Hair Growth: Does It Really Work? IK Clinics