Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous 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