glutathione is produced by Synthase - an overview Glutathione in Our Diet and

Worth every penny

Various topical, oral, and injection-based cosmetic skin-lightening agents with different mechanisms of action are used widely across Asia, including hydroquinone, azelaic acid, kojic acid, mulberry, alpha-arbutin, beta-arbutin, glutathione, licorice root, papaya, vitamin A (e.g., retinol), vitamin B (i.e., niacinamide), and vitamin C

Adv Compos Hybrid Mater 8(6):432

Intravenous therapy may be considered under medical supervision for specific health conditions, but it carries more risks and is not recommended for cosmetic purposes by most experts

Rescue of alpha-synuclein cytotoxicity by insulin-like growth factors

Plasmodium falciparum resistance to sulfadoxine-pyrimethamine in Africa: a systematic analysis of national trends