Your Visit Flow

Yes. You can generally visit KOH without bringing anything special. Towels, a bathrobe, shower products, and amenities are provided. Our towels and bathrobes are made in Imabari, one of Japan’s most renowned towel-producing regions, and each private room is equipped with a ReFa shower head. You may wish to bring your own skincare or makeup products if you have specific preferences.

At KOH, we check the temperature, moisture, and fermentation condition every day so that guests can enjoy the enzyme bath safely.

We use 100% Japanese rice bran. It is not heated directly with electricity or gas; instead, the warmth is created through natural fermentation.

Because natural fermentation changes depending on the temperature, humidity, and condition of the rice bran each day, our trained staff spend approximately 2.5 hours every day maintaining and checking the rice bran before welcoming guests.

Unlike a conventional heated bath with a preset temperature, KOH relies on daily hands-on inspection and careful management, with safety as our highest priority.

The word “detox” is often used in wellness to describe the feeling of sweating, slowing down, and feeling refreshed or reset. At KOH, many guests continue to perspire after the approximately 15-minute enzyme bath. We invite you to enjoy the full wellness experience, including the natural warmth of 100% Japanese rice bran, perspiration, a private shower, and cool-down time

No. A sauna warms the body with heated air, while KOH’s enzyme bath uses the natural fermentation heat of 100% Japanese rice bran and gently surrounds your body with the warm rice bran. The enzyme bath itself lasts approximately 15 minutes and offers a different experience of warmth and perspiration from a sauna.

Each private room has a lockable locker where you can safely store your valuables and personal belongings. Large luggage such as suitcases is also welcome, making KOH convenient if you are coming directly from the airport or visiting before your flight.

No. The enzyme bath itself lasts approximately 15 minutes. Afterwards, you can use the shower inside your private room and relax in your private relaxation area. This is your cool-down time, and many guests continue to perspire after the bath. KOH provides a lightweight, absorbent bathrobe specially selected to feel comfortable around the shoulders, so you can relax comfortably during this time.

Yes, absolutely. When you arrive, we will carefully ask about your condition and preferences so that first-time guests can enjoy the experience with peace of mind. If you have any concerns, please contact us through the inquiry form before making a reservation.

For the 90-minute experience, the total time is approximately 90 minutes, including counseling, changing, the enzyme bath, shower, and cooling-down time. The required time may vary depending on your booking, so please check the duration shown on the booking page and arrive with enough time.

Yes. The way rice bran is applied and the bathing time can be adjusted according to your condition and how you feel the heat. Please let us know if it feels too warm.

Because of perspiration and warmth, you may temporarily feel tired or sleepy. Please hydrate well and take it easy on the day of your visit. If you are concerned, contact us in advance.

KOH is a wellness space designed for adults to relax quietly and comfortably. As a general rule, our services are available to guests aged 18 and over. We kindly ask that you do not bring children with you.

Yes. We can store your suitcase and other large luggage during your stay. After the enzyme bath, you can take a shower, use the hair dryer and amenities, get ready, and then head directly to the airport.

For our 120-minute experience, please allow enough time for transportation to the airport, including possible traffic if taking a taxi or waiting time if using the Yui Rail. As a general guide, we recommend starting your reservation at least 4.5 hours before a domestic flight and 5.5 hours before an international flight.

Travel times may vary depending on traffic conditions and your airline’s check-in deadline, so please allow plenty of time.

Yes. Two guests can enjoy the enzyme bath at the same time, side by side. Showers and relaxation time are provided separately in each private room.
If you would like to visit with two guests, please contact us with your preferred date and time. We will check availability and confirm whether we can accommodate two guests at the same time.

Yes. KOH is by reservation only. Please make your booking through the booking page.

In principle, each guest uses a fully private room individually. If multiple guests visit together, each person will be guided to a separate private room.

As a rule, cancellations and changes should be made at least 24 hours before your reservation. For last-minute cancellations, please check the policy on the booking page.

Cash, credit cards, and various QR code payment methods are accepted.For guests booking from overseas, advance payment is required. Please complete your payment through the booking page before your visit.

Yes. Towels, robes, disposable underwear, cleansing items, and skincare products are provided, so you can visit empty-handed.

During the enzyme bath, you will change into items such as disposable underwear provided in the facility. You may arrive in your usual clothes.

You may use the bath with makeup on, but because you will perspire a lot, we recommend cleansing beforehand.

You can store your belongings and valuables in the lockable locker inside your private room. Staff will guide you on anything you need during the bath.

During your period, your condition may be unstable, so please avoid using the bath if it feels difficult. Contact us if you would like to change your appointment.

For safety, we ask guests who are pregnant to refrain from using the bath. If you are postpartum or concerned about your condition, please consult your doctor before booking.

A few days after your period ends, when your condition is more likely to be stable, is often recommended. Please choose a timing that suits your own condition, such as when you are concerned about coldness or swelling.

Postpartum recovery differs from person to person. Please consult your doctor and use the bath only after your condition has stabilized.

The rice bran is stirred daily and managed while checking temperature, humidity, and fermentation condition. We prepare the bath after each use and work to maintain a clean environment.

After each use, we condition the rice bran and adjust the bathing position so it is not the same as the previous guest’s. We guide guests only after hygiene management has been completed.

If you have allergies to rice bran or plant-derived ingredients, please contact us in advance. Depending on your condition, we may ask you not to use the bath.

Staff stir the rice bran daily and manage fermentation while checking the temperature. The felt warmth can be adjusted to each guest.

Before your bath, avoid heavy meals and alcohol. We recommend a light meal and good hydration. Afterward, continue hydrating and choose gentle foods for your body.

It depends on your purpose and condition. First-time guests may find once or twice a month easy to start; once you are used to it, weekly or every other week can be a good rhythm.

Some guests notice changes such as feeling warmer, perspiring more easily, feeling more relaxed, or improved skin condition. Continuing without strain is important.

Your body will already be warm, so please avoid long baths, saunas, and intense exercise that day. A light shower and quiet rest are recommended.