Marigold Flower Extract Active Ingredient: Lutein, Zeaxanthin, Lutein Esters Spec: Lutein: 5% - 90% by HPLC; Zeaxanthin: 5% - 50% by HPLC; Lutein Esters: 10% - 80% by HPLC; Form: PWD/Beadlet/Oil/CWS Extract Solvent: Ethanol, Water Lutein and Zeaxanthin are yellow pigments belonging to Xanthophylls in carotenoid family. KEBâ??s Lutein and Zeaxanthin are natural carotenoids and derived from Marigold Flower. The human body itself cannot produce xanthophylls, thus we have to supplement Lutein and Zeaxanthin with food or dietary supplement. . Lutein and Zeaxanthin can lower the risk of age related vision loss by protecting the retina from damage of the photo-oxidative affect of blue light.