glutathione biochemistry cycle redox infographic GLUTATHIONE SYNTHESIS - PMC

As a strong antioxidant, glutathione helps manage hyperpigmentation by protecting skin cells from oxidative stress caused by sun exposure, pollution, and environmental damage

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

Interferon Suppression: Low levels of interferon, a pleiotropic cytokine that regulates the immune response and inflammation, is common in severe COVID-19

PMID: 4019277

A: No, glutathione should complement, not replace, a proper skincare routine that includes cleansing, moisturizing, and sun protection