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GPX4 normally catalyzes GSH to glutathione disulfide (GSSG) and further reduces L-OOH to L-OH to protect cells against damage by lipid peroxides (LPO) (Liu et al., 2025
Although there are no serious restrictions afterward
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Prescription retinoids like tretinoin are more potent than over-the-counter retinol
Many people find that the abdomen is the easiest place to start, but if you notice consistent bruising there, switching to the thigh may provide relief
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