Xanthophylls powder is high pure and content natural extracts extracted from fresh marigold flower.Its main content is free lutein. Specification:golden powder, slightly soluble in water. Application Scope: widely used in medicine, health products, food and cosmetics. Pakage: Aluminum foil vacuum inside packing with 1kg,5kg,20kg of each bag,outside packing with barrel. Stroage and Valid period??12 months.storage protect from light and heat. store in cool, dry, airproof conditions.