In Japanese hot springs, the basic rule is that even if you hold a small towel in your hand, you should not put it into the bath. For foreign visitors this may seem like a minor detail, but it is a common practice in Japan.
This is part of a culture about how to treat water used communally. This article explains why you shouldn't put towels in the bath, where to place them, and why this point is often emphasized in Japan.
Not putting towels in the bath keeps the water clean
Towels are meant for drying the body or for carrying while moving, not for being placed in the bath. To keep communal water as clean as possible, towels are kept outside the bath.
In Japanese hot springs, the bath is a place to warm up rather than a place to wash. For that reason, towels are not treated as part of the bath and are considered items to be left outside.
It's also about appearance and how others feel
Beyond actual dirt, how other users perceive the water matters. If a towel is in the bath, it can easily make the shared water look less clean.
In Japanese communal bathhouses, both physical hygiene and the appearance of safety for others are important. Not putting towels in the bath has become an established practice as part of that consideration.
So where should you put your towel?
Many people place small towels on top of their heads or on the rim of the bath. Some keep them in their hands while bathing, but the rule is that they must not be soaked in the water.
For visitors to Japan, the proper place for a towel can be confusing. However, rather than seeking a perfect answer, simply making sure not to put it in the water will generally keep you within acceptable practice.
Avoid bringing large bath towels for the same reason
In Japanese hot springs, large bath towels are usually left in the changing area. Bringing only a small towel into the bathing area is often sufficient.
This also reflects a sense of keeping the bath and washing area as uncluttered as possible. Minimizing items brought into the bathing area makes the communal space easier to use.
It's not a special strict rule for Japanese people
Some visitors may feel towel handling is excessively detailed. For Japanese people, however, it is not a special ritual but a natural habit in communal baths.
In other words, even if it seems like a fine-grained rule, it can be understood simply as not putting towels into shared water. There's no need to overthink it.
Conclusion
Not putting towels in the bath at Japanese hot springs helps keep communal water clean and allows other users to enter with confidence. Remember that small towels may be carried but should not be put into the water.
This is less a strict rule and more one of the basic sensibilities for sharing bathing water in Japanese communal bathhouses.


