... Inner Mongolia, Shanxi, Yunnan, etc. The marigold we used comes from Yunnan province. Based on the local situation of special soil ... concentration of Lutein ester. Richems Lutein esters are derived from marigold flowers, which is a rich, safe and natural ... supplement, Food colorant, Feed supplement [Function] Lutein helps protect from oxidative stress and high-energy light, protect against blindness , ...