The extent of acanthosis nigricans in the patient on admission. Download Scientific Diagram Glutathione to improve skin tone ? Dr Priyanka Reddy GLUTAFLO Men's and Women's Glutathione Face Cream For Melasma, Dark Spots, Hyperpigmentation, Anti Ageing, Acanthosis Nigricans, Black Neck with New Perspectives on Nutraceutical Insulin Sensitizing Agents in the Treatment of Psoriasis and Other Dermatological Diseases Brightening from Within: How Glutathione Naturally Reduces Hyperpigmen Setu Nutrition Acanthosis nigricans is a medical sign characterised by brown to black, poorly defined, velvety hyperpigmentation of the skin. It can also be due to some underlying disease, so don't ignore & consult your doctor. . . #