There are more than 600 different carotenoids. In humans, the main ones are lutein/zeaxanthine, lycopene, beta-carotene and alpha-carotene.

Carotenoids do not all have the same value. The most anti-oxidant are lycopen and lutein. Lycopen, which is present in the skin, is twice as anti-radical as beta-caroten*. Unfortunately, its level drops by 50% when the body is exposed to the sun: a daily intake is thus recommended before and during that period. It is preferable to take lycopen in its oily form; the presence of the oil facilitates its assimilation and its incorporation into the cells.