GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health GHK cu Copper Peptide Hair Regrowth Shampoo for Men & Women Boost Hair Growth Nourish & Revitalize Shop Internationally 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care GHK Copper (GHKCu) is a naturally occurring tripeptide that acts as a potent signaling molecule for hair regeneration., How it works: GHK Cu enhances hair follicle health by promoting angiogenesis and Copper Tripeptide For Thinning Hair Regrow Serum Essence Oil DHT Blo Collagen Tripeptides Game changer alert Introducing our GHK Cu Peptide Hair Serum by ReGrow Labs, a next level topical designed to revive, repair, and regrow. Powered by GHK Cu peptide, this is where science meets real results.