Astaxanthin acts as an antioxidant by dual mode of action. It suppresses singlet oxygen and also inhibits lipid peroxidation. By these actions it reduces the harmful free radicals. Therefore acts as a very strong antioxidant. Astaxanthin is absorbed by passive diffusion into the intestinal epithelium alongside fatty acids. Then it is incorporated into lipoproteins, transported to the liver, via lymph and blood and partly resecreted with lipoproteins. More than 70% of the Astaxanthin is contained in high-density lipoprotein part of plasma. Highest concentration of Astaxanthin is in the small intestine, followed by subcutaneous fat, abdominal fat, spleen, liver, heart, kidney and skin and lowest in the muscles.