does glutathione niacinamide lighten skin vs Niacinamide: The Science Behind Brightening – Newko Beauty illuminating ingredients to lift away dark spots and amp up the glow Glutathione Brightening Body Lotion –
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Lets start off by talking about what vitamin B12 is and why its so important

Glutathione, Redox and ROS in Healthy and Tumor Cells Redox and ROS are also of particular importance in tumor cell signaling pathways associated with cancer progression through their roles in tumorigenesis, tumor cell migration, and tumor cell survival [29,30,31]

Heres the simple truth: You dont need everything you need what your body is asking for right now
It definitely makes it worse

Appl Environ Microbiol 71, 41214126 (2005)
As You Age: Our natural production of glutathione begins to decline as we get older
