There is very little evidence to support this claim, and repeated injections of glutathione might even be harmful
Oxidative stress and autoimmune thyroid disease
Carucci S, Romaniello R, Demuru G, Curatolo P, Grelloni C, Masi G, et al
Even more impressively, intracellular glutathione inside peripheral blood mononuclear cells (PBMCsa critical type of immune cell) increased by an astounding 100%
Reviewing publications that also included cases reported before the 2021 WHO classification revealed equivocal treatment results
When incorporated into your complexion regimen properly, hydroquinone decreases the production of melanin by inhibiting tyrosinase, an enzyme needed for melanin production, to decrease the appearance of hyperpigmentation