In Japan, onsen etiquette focuses on quiet behavior and care for others. Two important rules are do not wash your hair or body in the bathtub and use rinsing water before entering. These rules help keep the bath clean and comfortable for everyone.
The bathtub is not a place for washing
The bathtub is not a place for washing the body. People wash first and then enter the bathtub to warm the body.
- Shampoo and soap make the water dirty
- Hair in the water makes other guests uncomfortable
Therefore, people are expected to:
- tie their hair with a band
- keep long hair out of the water
This helps keep the bathtub clean.
Why rinsing water is used before entering
Before entering the bathtub, guests use rinsing water (kakeyu) on the body. Rinsing water has the following purposes:
- It removes light sweat and surface dirt
- It reduces stress from temperature change
- It shows consideration for other bathers
People often pour water in this order: feet → hands → shoulders → chest.
However, the best practice is to wash the body and hair at the washing area before entering the bathtub. Washing first helps protect cleanliness and comfort in the shared bath.
What to do in the washing area / what not to do in the bathtub
Do this in the washing area
- wash hair
- wash body and face
- use shampoo and soap
Do not do this in the bathtub
- wash hair or body
- use shampoo
- dive, swim, or move actively
In the bathtub, the basic rule is to sit quietly and relax.
Practical notes for travelers
- Do not place towels in the bathtub. Place them on the rim or on the head.
- Do not run or jump.
- Wipe the body lightly before returning to the changing room to avoid wet floors.
FAQ
Yes, you can enter after rinsing water. However, the most hygienic way is to wash your body and hair in the washing area before entering. Some facilities especially recommend washing first when it is busy.
Tie or secure your hair so it does not touch the water. You may use a hair band if needed. Leaving hair in the bathtub is considered poor etiquette.
No. Towels are not allowed in the bathtub for hygiene reasons. During bathing, people usually place towels on the head or on the rim of the tub.
No. In most onsens, swimsuits are not allowed. Bathing is done without clothing to protect hygiene and water quality. However, some mixed baths or spa facilities have separate swimsuit zones. Check the rules of each facility in advance.
