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 vs AnagenX: Which Peptide Approach Supports Hair Growth Best? Ingredients Hairgenetix GHK Cu, AHK Cu & PDRN Peptides This compound has been studied for over 50 years., Most people discovered it last year on social media., , In 1973, Dr. Loren Pickart identified GHK Cu, while studying why young blood could restore