How to Layer Haloxyl and GHK Cu for Tired Eyes Tired looking eyes, fine lines, dark circles or puffiness? This is one of those eye creams that actually works. The Bandi Professional Eye Cream with Copper Peptide (GHK Cu) is designed to target the Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix Amazon.com: Caffeine 5% + Bakuchiol Eye Serum for Dark Circles, Puffiness Eyes with Argireline & Copper Peptides (GHK Cu) Roll on Under Eye Serum, Anti Aging Wrinkle Care for Fine Lines 20ml : Beauty