Exploring the Safety and Efficacy of Glutathione Supplementation for Skin Lightening: A Narrative Review.

The rising demand for skin-lightening products has brought glutathione, a tripeptide with antioxidant properties and melanogenesis-regulating effects, into focus as a potentially safer alternative to conventional agents. This narrative review aims to evaluate the efficacy and safety of oral, topical, and intravenous glutathione in skin-lightening therapies. Oral administration shows significant but variable decreases in melanin levels with limited side effects.