Mechanistically, GHK-Cu counteracts UV-induced damage through multiple pathways: suppression of UV-stimulated MMP-1 expression prevents ongoing collagen degradation, enhancement of collagen synthesis repairs existing deficits in dermal matrix density, and antioxidant properties reduce accumulation of oxidatively modified proteins and lipids
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Elkady Y, Sobhy M, Baraka M, Sebaiy MM (2020) HPLC method for simultaneous determination of ascorbic acid, phenylephrine, paracetamol, caffeine in their pure and dosage forms