Kishu Binchotan Charcoal TowelMost towels that claim deodorizing properties use a surface coating a finish applied after weaving that washes away over time. The Kishu Binchotan works differently. Fine charcoal powder from Kishu Ubame Oak is kneaded into the cotton and rayon yarn before the towel is woven. It is part of the fiber. The grey and black colorways are not a dye they are the charcoal expressing itself through the material.