Cladosiphon Okamuranus Good Plant extracts Soothing Cladosiphon Okamuranus at a glance Type of brown algae also known as mozuku Long used in traditional Japanese medicine Has a soothing effect on skin Key calming component is a polysaccharide called fucoidan Cladosiphon Okamuranus description _Cladosiphon okamuranus_ is a type of brown algae, primarily harvested off the waters of Okinawa, Japan. It is an edible seaweed also called mozuku. In addition to being a food source, it has long been used in traditional medicine to tackle a variety of internal and external ailments. Research shows that applied topically, _Cladosiphon okamuranus_ has a soothing effect. The key to this calming ability is a polysaccharide found within the algae called fucoidan, which helps inhibit factors that can lead to skin irritation. The usage range for _Cladosiphon okamuranus_ in leave-on skin care products is between 0.025-0.05%.