Copper Peptide Hair Growth Conditioner GHK Cu for Hair Loss Hairgenetix Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Pls be warned that I don't use peptides from this seller. I don't think this @amos jamieson anneq can be trusted I only get GHK CU from Body Mechanic Active Therapy 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