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The Japanese TOTO Washlet Turns 40 years old

9/21/2020

The Toto Washlet turned 40 in June 2020. When the bidet toilet seat was first released, consumers were skeptical about the concept of “washing not wiping”, but a 1982 television commercial helped to change all that, making the Washlet a household name. In an age when talking about bodily functions on TV seemed unthinkable, Toto made waves with a commercial in which an actress displays her frilly underwear and tells the audience, “your bottom wants to be washed too.”

Four decades later, 80% of Japanese households have a Washlet or other bidet toilet seat, and the use of these devices has become standard. In fact, Japan now leads the world in sophisticated and hygienic toilets, which regularly win admiration from overseas visitors.

In March 2019, total global Washlet sales topped 50 million. Outside Japan, the devices can be found in five-star hotels and landmark buildings around the world.

Washlet Milestones

1978 Toto begins developing a bidet toilet seat that uses jets of warm water.
1980 Washlet released.
1982 Toto releases TV commercial with the catchphrase, “your bottom wants to be washed too.”
1986 Washlet goes on sale overseas.
1991 First Washlet with ozone deodorization (subsequently replaced by deodorizing catalyst).
1993 Release of more sophisticated tankless design with electronic control system.
1998 10 million units sold.
1999 First Washlet with Wonder-Wave function.
2005 20 million units sold.
2011 30 million units sold.
2011 First Washlet with self-cleaning wand function.
2012 First Washlet with premist function.
2015 First Washlet with new air deodorizer function.
2015 40 million units sold.
2017 First Washlet with Air-In Wonder-Wave function.
2019 50 million units sold.
2020 Washlet turns 40.

Wonder Wave/Air-In Wonder Wave


Wonder-Wave is a technology developed by Toto that alternately dispenses two jets with differing velocities to give a satisfactory user experience while using less water.

Toto’s latest model, released in 2017, incorporates Air-In Wonder-Wave, which aerates the water droplets for a more agreeable sensation.

Electrolyzation

Chloride ions in the water are electrolyzed to create hypochlorous acid, which has sanitizing properties. This is an environmentally friendly way of keeping the toilet clean that does not require the addition of any chemicals, and with time the water reverts to its original state.

Self-Cleaning Wand

The wand cleans itself before and after use. After use, the interior of the wand is sanitized with electrolyzed water to keep it hygienic.

Premist

A mist automatically wets the bowl before use to make it less prone to soiling. After use, another mist containing electrolyzed water is applied to kill germs and keep the toilet cleaner for longer. The mist is reapplied automatically every eight hours.

Automatic Air Deodorizer

The Washlet learns when in the day the toilet is likely to be used, and activates the deodorizer an hour before. The unit draws in offensive odors and deodorizes them using an electrolyzed water filter.

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