I found this supplement and had to review it. Astaxanthin is a compound found in a certain type of algae called Haematococcus pluvialis. This natural compound is effective at protecting cells and specifically the mitochondrial membrane from oxidative stress. The mitochondria in cells make energy and are essential for normal functions to occur in your system. If it takes long-term abuse from free radicals, problems can arise. As a powerful antioxidant derived from pure nature, I would recommend anyone test this out. Compared to beta-carotene, Astaxanthin has been said to be better at trapping singlet oxygen free radicals.