The Peptide Craze Ground Truths 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 Amazon.com : Scalp Exosomes with Growth Factor Peptides (EGF & IGF), GHK Cu, and Hyaluronic Acid Topical Hair & Scalp Rejuvenation. Made in Korea. (100 mg Exosomes + 5 mL Peptide Solution) : GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more, , , Heres what it can do:, Boost collagen for smoother, firmer skin, Anti aging improves fine