glutathione black skin A New Lightening Procedure Is Short on Evidence Glutathione Injections London Skin Brightening:

Whereas earlier research primarily focused on traditional pharmacology and clinical studies, the integration of AI and omics now allows researchers to explore the mechanisms of Chinese medicine from a broader systems-level perspective, enabling more effective identification and validation of potential targets

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Nutrients, 11(9), 2073

Side Effects As with the GLP-1 mimickers currently on the market, gastrointestinal side effects were commonly reported including nausea, vomiting, diarrhea, and constipation, and they were more often associated with dose increases

In other words, glutathione also protects the cell from the outside, not simply from ROS forming on the inside of the cell