noun
A bath infused with herbs, often for relaxation or health. Wasei-eigo from English 'herb bath'.
wasei-eigo (Japanese-coined English), from herb bath
週末にハーブバスでリラックスした。
I relaxed in an herbal bath over the weekend.
このスパではラベンダーのハーブバスが人気です。
The lavender herbal bath is popular at this spa.