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It is produced mainly by the liver and is involved in multiple biological processes such as When glutathione levels decrease, the skin becomes dull, pigmented, uneven, and more prone to oxidative damage
PMC+1 Many studies also note that longer trials, larger sample sizes, and standardization are still needed to fully validate glutathiones efficacy
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Most of the GSH (8085%) is stored in the cytosol, 1015% in the mitochondria (with an equal concentration between matrix and cytosol, thus requiring specific transport systems) and a small part in the endoplasmic reticulum (ER) (1, 6, 7)