Yuzu bath is a custom in Japan though. Quoting Wikipedia:
Yuzu is also known for its characteristically strong aroma, and the oil from its skin is marketed as a fragrance. In Japan, bathing with yuzu on Tōji, the winter solstice, is a custom that dates to at least the early 18th century. Whole yuzu fruits are floated in the hot water of the bath, sometimes enclosed in a cloth bag, releasing their aroma. The fruit may also be cut in half, allowing the citrus juice to mingle with the bathwater. The yuzu bath, known commonly as yuzuyu (柚子湯), but also as yuzuburo (柚子風呂), is said to guard against colds, treat the roughness of skin, warm the body, and relax the mind.