AHK CU + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Absolute GHK cu Stem Cells & Peptide Hair Growth Serum and Shampoo MTS Mall of California 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 : . Dr. Shintre breaks down what it is and why it works. ? A copper based peptide that naturally occurs in your