This "automatic bathtub" washes you using ultrasound 🛁

What if the future of personal hygiene involved a bathtub capable of doing everything for you? A type of machine, resurrected after five decades of being forgotten, promises to wash, dry, and even assess your health—all in just 15 minutes.


The ultrasonic technologies at the heart of this innovation use high-frequency vibrations in water to create microscopic bubbles. As these bubbles burst, they release a force strong enough to dislodge even the most stubborn dirt. This principle, initially explored in the 1970s, is making a comeback with unprecedented refinements brought by the Japanese company Science Co.

The original idea comes from a visionary Sanyo Electric engineer, Eiji Yamaya, who designed a washing capsule for the Osaka Expo in 1970. At that time, the technology had limitations: the bubbles were too large to provide optimal effectiveness. Despite the excitement surrounding it, the innovation failed to attract widespread interest.

Today, Science Co. has revived this concept, breathing new life into it. Presented as a cockpit, the bathtub named "Mirai Ningen Sentakuki" (literally "future human washing machine") features a transparent lid and uses microscopic ultrasonic bubbles for deep cleaning.

But this machine goes far beyond hygiene. Integrated sensors analyze pulse and other physiological data in real time, adjusting elements such as the water temperature accordingly. Artificial intelligence detects the user's emotional state and projects relaxing images to maximize comfort.

Another key addition: automated drying. Although details about this feature remain confidential, the entire cycle is designed to be quick.

The Osaka Expo 2025 will serve as the launch platform for this bathtub. Science Co. plans to allow 1,000 visitors per day to test the machine during the event, which will bring together representatives from more than 160 countries.

The ambitions don't stop there. The developers envision a home version in the near future. Their goal? To make this machine much more than just a gadget. Thus, Eiji Yamaya's original concept finally takes shape, combining bold design, technological innovation, and a holistic vision of health. So, are you tempted by an "automatic bath"?