GHK Cu 50mg Research Peptide Australian Peptide Store A brighter look starts here. Hyperpigmentation correction made effortless. Formulated with Glutathione and Kojic for a targeted brightening effect while, helping to smooth and revitalize the delicate under eye area. Enhance your clarity. GHK Cu Copper Peptide 50mg Cypress Compound Co Ghk Cu Peptide Etsy Triple brightening? Say less!, Heres the breakdown on our Glutathione kojic acid eye patches brightening trio so you understand exactly how it helps your skin become clear and radiant!