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 Skinworks GHK Cu will always be that girl One of my go to favorites right now is GHK Cu. Here's a little about it: GHK Cu is something your body actually produces naturally and Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Mall of California Organic Copper Peptide GHK CU Anti Aging Moisturizer Lightweight Hydrating Cream GHK Cu Peptide for Skin Rejuvenation in Ponte Vedra FL BlueWater Wellness BlueWater Wellness & MedSpa