Ecklonia cava, one of the edible brown alga, known as sea trumpet, is found in Korea and Japan. E. cava used in Seactive is sourced from Jeju Island. It has an essential function as a food resource to marine organisms and has a critical role in keeping the sea environment clean. Abundant phlorotannins in E. cava is a big difference compared to other plants, and it is reported to have various biological activities including anti-oxidant, radioprotective, anti-inflammatory effects, and so on. Seactive shows powerful anti-oxidant, anti-photoaging, cell-protective, and anti-allergic effects in vitro.