: . Dr. Shintre breaks down what it is and why it works. ? A copper based peptide that naturally occurs in your GHK CU Hair Loss & Regrowth Treatment Therapy Vitality Health 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 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