A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend Copper peptide GHK is a powerful skin anti aging peptide boosts collagen synthesis supports wound healing hair follicle growth fibroblast growth improves skin wrinkles The best thing about The GH IGF 1 axis in ageing and longevity Nature Reviews Endocrinology GHK Biotin Peptide for Hair Growth: The Science Behind Scalp Renewal I'm Fabulous Cosmetics The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference