Antioxidants include the category of nutrients that prevent from oxidation by fighting against oxidative stress, source of many problems (skin aging, allergies, etc.).
Many environmental factors are at the root of oxidative stress, such as pollution, intensive sport, sun exposure, etc. Fortunately, there are many powerful antioxidants, such as vitamin C, vitamin E and carotenoids: beta-carotene, lycopene and lutein, to combat this oxidation.