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enzyme-catalysed conjugations of glutathione with unsaturated compound doi LanCLs add to dehydroamino acids generated at phosphorylated sites in the proteome Glutathione and glutathione-dependent enzymes: From
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The thing is, such a statement is only based on speculation, not facts

Powered by Vitamin C to fight dark spots, fade blemishes, and reveal radiant even-toned skin

10.1080/15548627.2017.1359449 Autophagy 32 HeZ.LiM.FangQ.LiaoF.ZouS.WuX.et al (2021)

My dark spots have lightened, and my skin feels cleansed and revitalized

For a 10mg vial expected to provide 5 doses at 2mg each, dead space losses of roughly 1 unit per draw mean you lose approximately 5 units total
