Meet Your New Anti Aging Powerhouse: GHK Cu Peptide Serum If you're looking for a seriously effective addition to your skincare routine, this is it. Our GHK Cu serum is a high performance, copper Copper Peptide (GHK Cu) 2% Recovery Serum How to look much younger within a year GHK Cu is one of the most studied skin peptides on the planet, it stimulates collagen production, improves firmness, and helps skin recover from damage. Amazon.com: Neurogan GHK Cu Copper Peptide Hair & Scalp Serum 2400mg, 4% Copper Peptides Fast Absorbing, Water Based Formula for Hair Softness & Shine Cosmetic Dry Scalp Moisturizer Spray, Made in USA : Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health GHK CU Regenrative and Protective Agent Peptides World