Glutathione has anti aging effects since it helps our body eliminate toxins and wastes that may hasten our aging process. Arbutin is a widely used skin lightening agent derived from hydroquinone. Modelling changes in glutathione homeostasis as a function of quinone redox metabolism Scientific Reports What Is Hydroquinone 4% Used For and How Does It Work? Okdermo Hydroquinone vs. other brightening agents: which is best for you?