Astaxanthin
Astaxanthin is a supercharged antioxidant derived from microalgae. It's 500 times stronger than Vitamin E and crosses the blood/brain barrier, meaning it offers powerful oxidative protection for the nervous system (eyes, brain, nerve tissues, etc.). It has superior ability to destroy unstable oxygen molecules (free radicals), and is twice as effective as beta-carotene.
Preliminary research suggests that Astaxanthin may be able to prevent the oxidative damage to skin after exposure to UVA radiation (Source: Natural Medicines Comprehensive Database, Eighth Edition, 2006, page 88).