GHK Cu in solution (10ml 10ml) peptide with regenerating, restorative properties for skin and hair. Hair Growth Serum Intense with Copper Peptide GHK Cu Mayraki 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 GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age Copper Peptide Hair Growth Serum (GHK Cu & AHK Cu)