Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Set GHK Peptide Hair Growth Clinical Trial (2016) Research Summary Hairgenetix 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 for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this