Selenium

Selenium is an essential trace element with antioxidant, anti-inflammatory, and anticarcinogenic activities.As an anti-aging skin care ingredient, selenium’s protective ability lies in its essential role as a cofactor in the formation of the important protective enzyme glutathione peroxidase [40]. Selenium’s anti-inflammatory properties have been demonstrated by its ability to inhibit skin damaging UV-induced inflammatory cytokines [41]. Selenium as a topical ingredient does not penetrate skin well and must be used in its selenomethionine form in order to be bioavailable.