noun
enzyme bath
A bath taken in a tub filled with heated, fermenting organic materials such as rice bran or cedar wood dust, believed to have health benefits.
週末に酵素風呂に入ってリラックスした。
I relaxed in an enzyme bath over the weekend.
Compound of 酵素 (kōso, 'enzyme') and 風呂 (furo, 'bath').