GSH is present mainly (~85%) in the cytoplasm at a millimolar concentration and then distributed into mitochondria (~1015%) and endoplasmic reticulum and nucleus (~5%) (Figure 2B) [17]
This unique glutamyl linkage distinguishes glutathione from typical peptides and contributes to its stability against common intracellular peptidases, which is important for both biological function and industrial handling
The FDA has stated that there is a lack of evidence to support claims of skin lightening or other benefits
Daily sunscreen is essential
By slowing melanin production, glutathione helps reduce pigmentation and uneven tone, giving the skin a fresh, bright look
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