GHK Cu Glow Peptide Stack for Skin Rejuvenation Jennifer R. Berman MD GHK Cu is not Botox. It does not freeze a single muscle. It works because it works at the matrix level. GHK Cu stimulates collagen and glycosaminoglycan synthesis, modulates the matrix metalloproteinases that govern GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration GHK Cu Peptide: Turn Back the Clock Naturally Calibrate Hydration GHK Cu Copper Peptide: The Ultimate Peptide For Longevity 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