Astaxanthin has significant uses in the nutraceutical, cosmetic, and feed industries. The richest source of astaxanthin can be found in the haematococcus pluvialis microalgae which is now cultivated on an industrial scale. As a potent antioxidant, astaxanthin has potential to target a range of health conditions. This article covers the antioxidant, UV-light protection, anti-inflammatory and other properties of astaxanthin and its role in human health issues. The research reviewed supports the assumption that protecting body tissues from oxidative damage with daily supplementation of natural astaxanthin is a beneficial strategy in maintaining health.