TJ. Glutathione peroxidase is an important enzyme in cellular antioxidant defense systems, detoxifying peroxides and hydroperoxides. As a component of the glutathione cycle, it protects the liver from reactive oxygen metabolites. Selenocysteine Glutathione Metabolism an overview ScienceDirect Topics Hyperoxide detoxication Encyclopedia of the Environment As a cycling fanatic it is always important to take care of your skin at all time! How many times have we forgotten to put sunblock or cleanse our body? Don't worry! @