Ugai and Tewashi: Teaching Kids Handwashing and Gargling

Find out how Japanese families and schools build the habit of tewashi and ugai, handwashing and gargling, into the return-home routine, and how to adapt it.

Published October 19, 2026 at 11:26 AM JST | By Tokyo Paul

Quick answer: Tewashi is handwashing and ugai is gargling. In Japan the pair is taught from early childhood as a return-home routine: a child comes in, washes hands, gargles, and only then settles down. Public health notices in Japan recommend both, especially in cold and flu season. Families elsewhere can borrow the routine as a simple, repeatable habit.

What tewashi and ugai mean

Tewashi means washing the hands, and ugai means gargling, that is, rinsing the mouth and throat with liquid and spitting it out. The two words are so often spoken together that the phrase tewashi ugai works almost like a single instruction. In Japan gargling is widely treated as an everyday health habit, and reminders become more frequent in cold and flu season.

The pair is commonly taught from early childhood, and the phrase often appears on posters and signs near sinks in schools and public facilities. For a child growing up in Japan, then, the two steps become familiar well before elementary school, and they are linked in the mind with coming home, the way brushing teeth is linked with bedtime.

The return-home routine

The usual picture is simple. A child comes through the door, says tadaima (the usual greeting on arriving home), goes to the sink, washes hands with soap, and gargles with plain water before putting down the school bag. Some families place a small cup or a labeled tumbler near the sink so that gargling is easy to remember and easy to do.

The routine works because it is tied to a fixed moment. Instead of asking a child to remember to wash when they feel like it, the household attaches the habit to a doorway. Public notices follow the same logic. A Tokyo ward's guidance advises washing hands thoroughly after going out and before meals, and gargling when you get home, as well as in the morning and at night.

What public health notices say

Japan's Ministry of Health, Labour and Welfare names both actions in its general advice on respiratory infections. Its current Japanese-language Q&A says that handwashing, gargling, mask wearing and ventilation are effective measures, and its influenza page also lists handwashing after going out, rest and balanced nutrition, and avoiding crowds. Advice is updated from season to season, so check the current pages from the ministry or your city.

Local governments repeat the message each winter. The Tokyo Metropolitan Government, for instance, advises washing hands with soap and running water after coming home and before meals as part of its flu precautions. Ministry and local government pages describe these as general precautions, not treatments, so they are best read as everyday hygiene advice, not as medical instructions for any one child. For specific health questions, a pediatrician or local clinic is the right person to ask.

At school and daycare

Schools and daycare centers in Japan commonly build hygiene steps into the day. Children are often guided to wash hands before lunch and after using the toilet or playing outdoors, and posters with step-by-step pictures hang above many sinks. Teachers sometimes sing a short song or count aloud so that young children wash for long enough.

Cold season usually brings extra reminders. Schools may send notes home asking families to repeat the routine at home, and children bring their own small towel or handkerchief so that they do not share a towel. Exact practices differ by school, so the school handbook or the daycare's welcome packet will explain what a family should pack and which steps the staff follow.

For families new to the system, the first term at a Japanese school is a good time to watch how the classroom handles the routine. Children often pick up routines by copying friends, and a few words of Japanese, such as te o aratte, are enough to join in at home.

How to teach young children

Break the routine into a few steps with pictures: soap, rub palms, backs of hands, between fingers, thumbs, fingertips, rinse, dry. A step stool at the sink and a bar of soap or pump bottle at child height make the task feel manageable. Counting to twenty slowly or singing a short song gives a rhythm without becoming a chore.

For gargling, start with plain water and a small amount, and treat it as a game. Very young toddlers generally cannot gargle, so families commonly begin by teaching them to rinse the mouth and spit, then to tip the head back a little. A sticker chart can celebrate progress. If a child finds it difficult, skipping gargling and keeping the handwashing is a reasonable choice.

Adapting the habit outside Japan

The idea travels well because it needs no special equipment. A hook for the school bag, a soap dispenser near the entrance and a small cup are enough. A hand-washing step after arriving home, before snacks and after outdoor play is easy to explain to a babysitter or grandparent, and it fits busy households because it takes only a short time. Travelers who stay with Japanese relatives may notice the routine in action and find it easy to join.

Families can also tailor the routine to the season, to the child's age and to the layout of the home, which may have a sink far from the entrance. In winter, add gargling or a warm drink; in summer, keep to handwashing and a quick face rinse. Medical opinion on how much gargling adds beyond handwashing varies, so there is no need to treat it as a rule. This guide shares general cultural information and published public notices, not professional advice; for a child's health, talk with a pediatrician or local clinic.

Related terms and ideas

Words that appear alongside tewashi and ugai include kaze (a cold), infuruenza (influenza), masuku (a mask) and seki echiketto (cough etiquette). Many Japanese families also use an oshibori, a damp hand towel, before meals at restaurants and daycare tables, which fits the same idea of cleaning hands before eating.

In daily conversation, adults may say te o aratte (wash your hands) or ugai shite (gargle) as a gentle reminder. The tone is usually warm and matter-of-fact, never scolding. Families who learn these phrases can share the same words with Japanese relatives, neighbors or teachers, which helps children feel at home in a Japanese school or play group.

Frequently Asked Questions

What is the difference between tewashi and ugai?

Tewashi is washing the hands with water and soap, while ugai is gargling, which means rinsing the mouth and throat with liquid and spitting it out. They are taught as a pair in Japan, usually right after coming home, and signs in schools and public places often name both together.

At what age do Japanese children learn to gargle?

Many children begin learning gargling in the preschool years, often by first rinsing the mouth and spitting, then trying small sips of plain water tipped to the back of the throat. Exact ages vary by child. Daycare staff and pediatricians can suggest when a particular child is ready, and handwashing can start much earlier.

Do health authorities in Japan recommend gargling?

Japan's health ministry lists handwashing and gargling among effective measures against respiratory infections, and the Tokyo Metropolitan Government lists handwashing after returning home in its influenza precautions. These pages give general public advice. Opinions on how much gargling helps differ, so families who have a question about illness prevention should talk with a doctor.

Want to go deeper? Tokyo Paul's book Japanese Parenting Secrets That Create Calm, Independent Children is available on Amazon.

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