Wash Binchotan in running water using a brush before placing them in drinking water or bath. Never use any cleanser / detergent, etc., as binchotan will absorb them.
Boil Binchotan in hot water for 10 to 15 minutes. Dry in a dark cold place afterward.
* We recommend to replace binchotan every 3 months when used for rice cooking / purifying water / bathing. Please wash / boil binchotan regularly during this period.
* Used binchotan can be recycled to improve your garden soil, etc.,