Together's Eye Defence is a special formulation to safeguard against blue light and improve visual performance with the use of technology in mind. Together's astaxanthin is from micro-algae and is the world's strongest naturally-occurring carotenoid. Together use supercritical extraction to ensure all the goodness stays potent and intact. Sustainably managed marigold flowers are used to gently extract key eye nutrients zeaxanthin and lutein. Beta carotene made with carrots completes Eye Defence's holistic approach to good eye health. This product is free from artificial additives and artificial processing aids.