Superoxide dismutase is an enzyme produced naturally in the body, specifically to break down the free radical superoxide (an oxygen with an excess electron and thus a negative charge). It is considered to be the body’s most important antioxidant and works by catalysing the conversion of superoxide, into elemental oxygen (O2) and hydrogen peroxide (H2O2), a process known as dismutation. This action is part of the body’s natural anti-ageing mechanism, so including this ingredient in skincare supports this natural protection process.