Ghk cu is honestly amazing for firmer, tighter, more lifted skin!! As we age, our natural copper peptide levels drop, which slows down collagen + elastin production (aka the proteins that keep your GHK Cu Peptide: What It Does for Body Composition and Metabolic Health 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 : GHK cu Copper Peptides Serum for Hair Hair Oils Copper Peptide for Skin, Hair & Scalp, Scalp Health, Regrowth Treatment for Thicker, Fuller Hair, Stronger, Reduce Aging Effect : Beauty