GHK Cu Copper Peptide 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 Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: GHK Cu Hair Growth Hyperpigmentation no more? GHK Cu Users Share Their Stories Aseir Custom Copper Peptide (GHK Cu) 2% Recovery Serum