Made in the Kishu region of Japan since the Edo period, Binchotan charcoal is activated by burning oak branches at extremely high temperatures for several days and then rapidly cooling them. Known as the highest quality activated charcoal for purifying water, Binchotan charcoal can be used to absorb chemicals in tap water, remove toxins from the skin, capture moisture and odors from the air, enhance blood circulation in a hot bath, stimulate healthy soil in the garden and deflect negative ions in your home.