Copper peptides (GHK Cu) have been studied for decades for their role in tissue repair and that same biology applies to hair. Research shows GHK Cu may help strengthen existing hair follicles, reduce Copper Peptide Hair Growth Mechanism: What Kinds of Hair Loss Can It Improve? Perfect Medical Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Mall of California The Science and Benefits of GHK Cu Peptide: Skincare, Hair Growth, and Beyond 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