ハコベ塩じお

noun

tooth powder made from roasted chickweed and salt

A traditional oral care preparation: chickweed (stitchwort) is roasted with salt and ground into a fine powder used as toothpaste. Rare term, mainly of historical or folk-medicine interest.

• 江え戸ど時じ代だいには、ハコベ塩じおを歯は磨みがき粉ことして使つかっていた。

  In the Edo period, people used hakobe-jio as tooth powder.