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Chemical research in toxicology 25 , 94100, doi: 10.1021/tx200242a (2012)

Nat Commun 8(1):113

Furthermore, ROS and LDH levels were increased, promoting ferroptosis in PC12 cells

The findings were disappointing: Only one study showed significant lightening, and that was limited to sun-exposed areas like the face and forearms One study found that 37.5% of subjects experienced temporary improvements, but within six months after stopping treatment, only 6.2% maintained lighter skin The effects were inconsistent across different body parts and age groups Researchers concluded that glutathione is not effective enough as a skin-whitening agent because effects were limited and unsustainable What Is Vitamin C and How Does It Brighten Skin