glutathione vitamin c niacinamide arbutin Chicnutrix Outshine, a face serum for glowing skin, is a unique formulation of Niacinamide,, Arbutin, Glutathione, & Triple Hyaluronic Acid serums for hyperpigmentation, brighter,, glowing Niacinamide – Improves the look of uneven tone and minimizes the appearance of pores for smoother L - Glutathione Serum Cream

Vitamin B12 is normally absorbed in the intestine after binding with a protein produced in the stomach called intrinsic factor

By regulating melanin synthesis, glutathione helps achieve a more even skin tone

In addition, those who take certain medications may be at increased risk for B12 deficiency, per Healthline

Additionally, three genes encoding for components of the GSH degradosomal complex ( DUG1 , DUG2, and DUG3 ) were present, as well as two hydroxyacylglutathione hydrolases coding-sequences ( GLO1 and GLO4 )

There isnt enough research to say exactly what will happen if you consume too much B complex, but more is not necessarily better, especially over the long term