This concern appears to stem from glutathione's skin-brightening mechanism, which works by inhibiting melanin production through tyrosinase modulation a temporary, dose-dependent, and generally reversible effect, not an autoimmune depigmentation process like vitiligo
10.1016/j.neuron.2019.03.013 31
Inclusion criteria were studies and trials on animal and human participants examining the effect of specified nutraceuticals (ubiquinone, nitrates, nitrites, quercetin, lycopene, coenzyme Q10 (CoQ10), curcumin, resveratrol, and flavonoids) on managing the initial stages (stages 1, 2, and 3) of CKD between 2000 and 2024
& Oehninger, S
Environ Sci Technol Lett
Consumers should be able to see how it is meant to be taken, when it expires, and which company in Singapore is responsible for it