AMS® Selenium is an essential trace element. It is one of the minerals that can't be synthesized naturally by the human body, and it is important in the function of various body organs such as skin, brain and thyroid. Selenium availability regulates Glutathione Peroxidase enzyme activity, which as a component of the glutathione cycle, protects the cells from free radicals. Selenium has also been studied for the treatment of some skin conditions such as dandruff & dermatitis. Selenium is vital for the brain and it also supports thyroid health.