GHK Cu Copper Peptide Hair & Scalp Serum GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Good skin starts with the right ingredients. We made the GHK Cu Peptide Serum for people who want real results without the clinical experience. Copper peptides, hyaluronic acid, niacinamide and more, in one Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Jumbo Size Pptido de cobre GHK GHK Cu Tripptido 1