Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care GHK Cu: The Regenerative Peptide Everyone's Talking About If you're looking for next level skin support and cellular rejuvenation, it's time to learn about GHK Cu (Copper Peptide). This naturally occurring peptide declines Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan Health