Ghk Cu Intra Nasal Spray 50 mg 0.34 oz. Westend Medical Supply The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, What is GHK Cu and Why is Everyone Talking About It? GHK Cu (Copper Peptide) is a powerful, naturally occurring compound in the body that plays a key role in skin health Exploring the Role of Tripeptides in Wound Healing and Skin Regeneration: A Comprehensive Review