Discover the origin of copper peptides, how they work, and why they've become a coveted addition to modern routines. Not all peptides are created equal and neither are our bodies. This is GHK Cu, a copper peptide (nasal spray) supplement from @NeuroGAN. I love experimenting, but I don't go in blind. My Compounded GHK Cu Nasal Spray Restorative Compounding Pharmacy + Wellness 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, Amazon.com: Neurogan GHK Cu + AHK Cu Hair Serum Pro Lightweight Scalp Serum with Dual Copper Peptides Daily Hair & Scalp Use, Cosmetic Product : Beauty & Personal Care