Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule Frontiers Case Report: Successful treatment of guselkumab in a patient with verrucous psoriasis unresponsive to secukinumab Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend