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 Peptides: Unlocking the Copper Peptide Revolution in Skin Care Does it work? Maneup GHK Cu hair growth serum : r tressless 89030 95 5 GHK Cu Gly His Lys Cu Copper Tripeptide 1; Prezatide copper