(info at dxalherbextract dot com) lutein is a carotenoid, meaning a natural colorant or pigment, found in dark green leafy vegetables such as spinach, egg yolks, various fruits and corn. lutein is the active carotenoid in this potent, natural source antioxidant. it is naturally derived from marigold flowers and contains a normal blend of carotenoids including zeaxanthin and cryptoxanthin. lutein also filters the high energy blue wavelengths of light from the visible light spectrum. main function: 1. promote healthy of eye and skin through reducing the risk of macular degeneration, 2. be good at protecting the eyes, the arteries and the lungs from damaging free radicals, 3. support normal eye function and protect the retina by blocking harmful blue light, 4. reduce the risk of heart diseases and cancers. package: cardboard drums, with double aseptic food poly bags inside. or by cartons, with vacual aseptic food poly bags inside, 20kgs per carton with 8 bags inside,2.5kg per bag.