GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling Skin can change when biology is supported, GHK Cu is a naturally occurring copper binding peptide thats been studied for its role in: Supporting collagen and elastin production, Improving skin Ghk Luxe Eye Cream by Skin Biology TikTok GHK Cu Peptide The benefits, side effects, and more [2026] GHK CU