What Is GHK Cu? The Copper Peptide That Rejuvenates Skin Curious about GHK Cu? This powerful peptide is known for its skin rejuvenating properties and is often called a "youth molecule". GHKCU helps promote collagen production, improve skin elasticity, reduces fine lines and Premium Copper Peptide Ghk Cu Collagen Boost Skin Repair Cosmetic Peptide Powder Ghk Cu Collagen Peptide, Anti Wrinkle Peptide Made in China.com GHK Cu is a powerful copper peptide that supports collagen production, skin and hair health, and tissue repair. It may help reduce fine lines, improve elasticity, and promote faster healing. Want to learn