glutathione peroxidase reduction of hydrogen peroxide by naphthalene peri-diselenide-based mimics: Mechanism and effect of substitutions Glutathione Peroxidase-1 in Health and
Description
While the effects of these agents on DNA damage were only observed with pretreatment, all the antioxidants did show significant protective effects against radiation-induced lipid peroxidation, even when administered after irradiation [38]

A comprehensive review published in 2020 analyzed three randomized controlled trials on systemic glutathione for skin whitening

doi: 10.1152/physrev.90100.2007

Controls excess oil production and helps maintain skin moisture balance
Others may have minute quantities of B12 derived from bacteria
