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A total of 83 women received 500 mg glutathione combined with 250 mg vitamin C, 50 mg alpha-lipoic acid (ALA), and 20 mg zinc daily

Results depend on a lot of factors and the results may vary from person to person

Keywords: melanin index, melanogenesis, oxidized glutathione, reduced glutathione, skin whitening, topical Introduction Skin aging is a complex biological phenomenon consisting of two independent clinically and biologically distinct processes, namely intrinsic aging and extrinsic aging. 1 , 2 Extrinsic aging (including photoaging) is the result of exposure to outdoor elements, primarily ultraviolet (UV) irradiation

HPLC measurement of DA, DOPAC and HVA DA and metabolites were separated by injecting 50 l of sample into a Microsorb C18 column (100 4.6 mm column, Analytical Column, Waters) and a mobile phase containing 130 mM NaH 2 PO 4 , 2 mM NaCl, 0.1 mM EDTA, 2 mM OSA (1-octanesulphonic acid sodium) and 12.5% (v/v) methanol, pH 3.71, at a flow rate of 1 ml min 1