Selenium
An essential trace mineral the body uses to build its own antioxidant enzymes; rare in skincare, where it plays a supporting antioxidant role.
selenium, L-selenomethionine, selenomethionine, selenoproteins
Ageing skin
What it does
Selenium is one of the many essential minerals that are fundamental for achieving and maintaining optimal skin health. The body uses it to build its own antioxidant enzymes, such as glutathione peroxidase, which help protect skin cells from the oxidative stress caused by UV and pollution. In skincare it is uncommon, appearing mainly as L-selenomethionine in a few antioxidant formulas and in some selenium-rich thermal spring waters.
How it works
Selenium works as an antioxidant indirectly: it is built into selenoproteins, the enzymes that break down damaging peroxides and help keep the skin's other antioxidant defences, such as glutathione, working. Early studies suggest topical L-selenomethionine may help skin defend itself against UV stress, but the evidence is limited, and it is no substitute for sunscreen.
MG says
Selenium is rarely the focus of a skincare formula, so for daily antioxidant protection look to well-studied topical antioxidants such as vitamin C, vitamin E and ferulic acid, applied every morning after cleansing and before SPF.
Cautions
Topical selenium is rarely irritating. Selenium supplements can be harmful in excess, so don't take them for your skin without medical advice.
