GHK Cu 50mg Copper Tripeptide Research Compound 99% 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 GHK Cu is one of the most powerful regenerative peptides for skin, hair, and overall tissue health. GHK Cu supports collagen production, healing, and visible rejuvenation from within. It's commonly used to improve skin Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum