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Clinical trials on skin have demonstrated improvements: In one study, GHK-Cu applied to photoaged skin for 12 weeks increased density and thickness while reducing laxity and wrinkles in 71 women

31 This cascade is crucial for cell proliferation, differentiation, and the synthesis of extracellular matrix proteins, essential for tissue repair and regeneration

It is used in cosmetics and personal care product manufacturing as an important whitening, brightening, as well as anti-aging product line raw material, to augment the functional assertions of high-end skincare formulations