Astaxanthin , a carotenoid which does not convert to vitamin a in the human body ,can be found in microalgae, yeast, salmon , trout , krill , shrimp , crayfish, crustaceans etc.. Astaxanthin is a powerful antioxidant , it is 10 times more capable than other carotenoids. The primary use of astaxanthin in feed today is as an animal feed additive to impart coloration, this includes farm-raised salmon and egg yolks. The primary use for humans is as a food supplement due to astaxanthin's potent antioxidant activity, it may be beneficial in cardiovascular, immune, inflammatory and neurodegenerative diseases. Astaxanthin can be added into cosmetics in order to removing face wrinkles, sunproof, anti-UV damage, skin-whitening , preventing and treating age-related macular degeneration . Our Astaxanthin is extracted from Haematococcus Pluvialis , it is more safe and efficient than synthetic ones.