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The glutathione dose is the primary variable

Due to its antioxidant properties, it effectively mitigates oxidative stress and promotes muscle regeneration through enhanced myofibrillar proliferation, hence decreasing muscle loss in an animal model of induced muscular atrophy (545)

In that case, to truly shift skin tone, you may need a holistic plan, such as laser/light radiation therapies or chemical peels combined with topical actives, like niacinamide, vitamin C, retinoids, etc

Additionally, researchers have developed a range of glutathione-depleting nanodrugs for efficient cancer treatment [49], particularly in addressing chemotherapy resistance in TNBC [50]