Astaxanthin is a carotenoid nutrient that is naturally distributed in marine organisms such as crustaceans and fish. In the environment, astaxanthin serves as a natural photo-protecting agent for marine life. In relation to cosmetics, astaxanthin may provide a similar benefit in the form of antioxidant protection. 1
As an antioxidant, astaxanthin helps to neutralize free-radicals that are present in the environment.