does taking glutathione lighten skin Glowing, Not Whitening: The Myth Debunked – Setu Nutrition Glutathione for Skin Lightening :

Since a decline in our bodys natural amount of glutathione can lead to signs of ageing, using glutathione for skin brightening can help you achieve a more even, revitalised look

Journal of Clinical and Experimental Hepatology

See especially Figure 1 in this reference

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