Hydroquinone vs Hydroxyquinone vs Quinone vs Phenol : r Mcat What Is Hydroquinone 4% Used For and How Does It Work? Okdermo Amazon.com: FAIR & WHITE Original Glutathione Dark Spot Serum 1 fl oz 30ml Skin Brightening Serum, Helps to Reduce Skin Pigmentation Skin Brightening Serum for Face & Body Glutathione Vs Glutamine Which is Better for Your Skin Health? Hydroquinone vs. other brightening agents: which is best for you? 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.