Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care Evolve Rewind the Clock with GHK Cu (Copper Peptide)! Experience the skin rejuvenating power of copper peptides now available at Evolve TX Medical Group! Smooth wrinkles Boost collagen Amazon.com : Truth Guy GHK CU Anti Aging Copper Peptide Serum for Skin & Hair Growth, with Carbon 60 for Fuller Hair, Beard and Lashes Boost Hair Growth & Reduce Aging Effect One Copper Peptides for Hair Growth Ultrastrong 10% GHK Cu Serum 7x Absorption Made in USA Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum