H2O2 promotes the aging process of melanogenesis through modulation of MITF and Nrf2

The purpose of this study is to investigate the effect of H2O2 on the aging of melanogenesis in human melanocytes. The staining of SA-β-galactosidase, an aging marker, was remarkably increased in the cells aged with H2O2 at 62.5 µM or more compared with young cells. The intracellular H2O2 level and melanin synthesis were also reduced in both H2O2-treated cells and senescent cells compared with young cells in DCFH-DA assay. Both the senescent...