A quick look at what makes Koso-Bathing OHESO special.
"Ingredients & Composition"
Our Koso-Bath at OHESO
is made from fermented rice bran and hinoki (Japanese cypress) sawdust, creating a natural, soothing warmth.
Ibaraki, known for its natto, inspires our fermentation process. Our master, with over 30 years of Koso-Bath research, has entrusted us with a secret recipe that’s never shared elsewhere.
Rich in natural negative ions
Mildly scented, pre-fermented rice bran
We harness the powerful deodorizing and antibacterial properties of Kiso hinoki,
along with other benefits, using only 100% organic ingredients.
"Health & Wellness Benefits"
Rice bran brings natural fermentation and hydration, and hinoki (Japanese cypress) adds antibacterial and deodorizing benefits.
Harnessing the strengths of each ingredient, the microbes’ own fermentation generates warmth, naturally keeping the bath at the perfect temperature.
Powered entirely by natural fermentation—no gas or electricity—our bath warms you from within, while enzymes support immune balance and enhance metabolism."
"Pool-style bath"
"The only pool-style bath on the Miura Peninsula"
Situated in the center of the Miura Peninsula, our Koso-Bath room offers a spacious pool-style bath for up to four guests at once.
Crafted from natural cedar and hinoki wood, our bath offers a heightened sense of relaxation, perfect to enjoy with family or friends. Private bookings are also available.
The large pool-style bath, rich in beneficial microbes, produces abundant fermentation heat, offering significant wellness and beauty benefits.
Enzymes generated by these helpful microbes also break down impurities, maintaining cleanliness and hygiene in the bath, allowing you to relax safely and comfortably.
"About the Architecture"
"A 57-year-old traditional Japanese house, beautifully renovated"
We have renovated a 57-year-old traditional Japanese house, keeping the use of modern materials like plywood to a minimum.
While many modern building materials are affordable and easy to use, they can cause sick house syndrome and contribute to environmental problems.
Phytoncides, natural essential oils found in the cedar and hinoki wood used throughout our facility, are said to offer benefits such as
① relaxation
② anti-cancer properties
③ relief from allergies like atopic dermatitis.
and
There are countless potential benefits, such as deodorization, detoxification, and natural insect-repelling effects.
"Essential Maintenance for the Koso-Bath"
"We ensure meticulous hygiene and maintain optimal enzyme activity"
After closing each day, we diligently carry out a process called 'stirring'.
This important maintenance helps the beneficial microbes generate heat through fermentation. While it can be hard work, it is indispensable for keeping the koso-bath in the best possible condition.
Thanks to this process, our bath reaches 65–70°C before opening each day, keeping it clean and safe so you can enjoy your koso-bathing with peace of mind.
English 
Japanese