Hijiki (Hai zao in Chinese) is a genus of edible brown seaweed found in Asia. Its Latin name Sargassum is inspired from the Sargasso Sea, where seaweed is abundant. Traditionally used for thyroid disorders, it is also recommended for reducing appetite and promoting weight loss.

Excellent for people who want to stay slim, Hai zao reduces the feeling of hunger and compensates the caloric intake thanks to its high fiber content. Moreover, in TCM, it contributes to the dissolution of the viscosities and fights water retention.