Bamboo Charcoal Konjac Sponge: 1.100% natural vegetal fiber. 2.Green, safe and no chemical additive. 3.Biodegradable percenta Bamboo Charcoal Konjac Sponge Konjac is a perennial herb in aroid family,Since ancient times, it has been widely use as a kind of medical and edible natural plant. Used in the foodstuff industry, it has been called nontraditional industrial revolution. And now the food ...