Why people are skipping the daily shower - and what Japan’s “washing machine for humans” Mirai Ningen Sentakuki means

Behind this trend sits more than simple convenience.

In plenty of households, it has become entirely normal for a day to pass without a shower - sometimes two or three. What used to be labelled unhygienic can now feel, to some, almost like an act of self-care. At the same time, high-tech concepts are appearing that rethink personal hygiene from the ground up, including a Japanese “washing machine for humans”. So what is driving the gradual move away from the daily shower?

Why the daily shower is losing its shine

For decades, the unwritten rule was clear: if you take pride in yourself, you shower every day. A quick rinse under the spray in the morning and you are done. Dermatologists, environmental researchers and psychologists are increasingly questioning this routine - and many people are changing their habits accordingly.

“Showering less does not automatically mean less hygiene - it often reflects a different idea of what ‘clean’ means.”

There are several reasons behind the shift:

• Skin health: Showering too often can wear down the skin’s natural protective barrier.
• Climate crisis and resource scarcity: Hot water and shower gel consume energy and raw materials.
• Everyday stress: Many people want to simplify routines and save time.
• Technical innovation: New cleaning methods are intended to be more efficient than a standard shower head.

The Japanese “washing machine for humans” at a glance

A particularly eye-catching example comes from Osaka. The company Science Co. is developing a personal-care capsule called “Mirai Ningen Sentakuki”, roughly meaning “washing machine for the human of the future”. The device is designed to wash and dry the entire body in around 15 minutes - with almost no effort required from the user.

How the futuristic washing capsule works

Visually, the technology resembles a wellness pod far more than a conventional shower. You sit inside a sealed capsule, and the rest is handled automatically.

• The capsule closes and the interior fills with water.
• A microbubble system loosens dirt and skin oils from the surface.
• Sensors record readings such as heart rate and physical wellbeing.
• An AI adjusts the temperature, water jets, lighting and soundscape.
• Finally, an integrated drying system dries the body completely.

The microbubbles used are extremely fine and are intended to reach into skin creases without the need for vigorous scrubbing. Similar approaches are already used in spa treatments and medical baths.

“In 15 minutes, the capsule promises cleaning, drying, wellness - and health data as a bonus.”

Hygiene, wellness and a health check in one device

What makes the concept especially notable is how it links body care with health monitoring. While the wash cycle runs, biometric sensors continuously track physiological data, including:

• Heart rate
• Signs of stress and exhaustion
• Changes in circulatory indicators

An integrated AI evaluates these signals and decides in real time how strong the massage effect of the water jets should be, how warm the water needs to be, and which lighting or sound setting best supports relaxation. The overall experience sits somewhere between a shower, a spa treatment and a mini check-up.

A historic idea, upgraded with modern tech

The underlying idea is not entirely new. A prototype “human washing machine” was already shown at Expo in Osaka in the 1970s, but at the time it remained a concept. Today, far more capable sensors, computing power and AI are available, which are meant to make the approach practical.

The current Osaka version revives that old exhibition highlight, pairs it with a contemporary wellness aesthetic, and targets a society already comfortable with smart homes, wearables and digital health apps.

Will technology change our shower habits for good?

It is still uncertain whether capsules like this will ever become common in everyday bathrooms, or whether they will mainly appear in selected hotels, care facilities and high-end spas. What is clear, however, is that they fit a broader trend that is already reshaping the classic shower.

Three developments are emerging:

Trend	Description
Showering less often	Many people cut back to every two or three days, using “flannel days” in between.
Gentler products	Mild syndets, solid soaps, shampoo bars and natural oils replace harsher shower gels.
Smarter devices	From water-saving shower heads to high-tech capsules - technology is meant to clean more efficiently.

While some people deliberately shower less to conserve resources, others try alternatives such as dry shampoos, antibacterial wipes, or “zone-based” washing: armpits, intimate area and feet daily, with full-body washing only every few days.

How little showering is still hygienic

Dermatologists have been emphasising for years that daily, hot, foamy showers often do more harm than good. Skin can dry out, itch and become more reactive. A reduced routine can therefore make sense - provided a few basics are followed.

• Clean armpits, intimate area and feet thoroughly every day, if needed at the basin.
• After sport or heavy sweating, rinse off as soon as possible.
• Use mild, pH-neutral products, especially for sensitive skin.
• Keep the water temperature more lukewarm, rather than consistently hot.
• Pat skin dry briefly after showering and apply moisturiser if required.

“If you know your body and pay attention to smell, sweat and how your skin feels, you will usually find the right shower rhythm quite quickly.”

The psychology of cleanliness: how much is habit?

Many people do not shower mainly for hygiene reasons, but because they feel “uncomfortable” otherwise. That sense of cleanliness is strongly shaped by habits and upbringing. If you have spent years learning that a daily shower is mandatory, anything else can feel instantly “dirty” - even when there is no objective issue.

Over time, that perception can shift. People who experiment with showering less often frequently report that the urge for a daily rinse fades, without anyone around them noticing. At the same time, interest grows in alternative rituals: brief breathing exercises, stretching or a cup of tea in the morning can partly replace the “wake-up shock” of water hitting the skin.

Risks, limits and sensible add-ons

Going without water and soap entirely is not realistic. Showering too infrequently for a long period can lead to unpleasant body odour, skin irritation and, in extreme cases, infections - especially in warm, damp areas of the body. People with certain skin conditions should always discuss changes to showering habits with medical specialists.

The combination of intentionally reduced showering and smart technology is where things get interesting. A capsule like the one from Osaka could, for example, help older people or those with limited mobility to wash regularly without physical strain. At the same time, the sensors could flag stress or circulatory problems and potentially ease pressure on care services or doctors.

For most people’s day-to-day lives, the changes will likely stay simpler for now: one fewer shower a week, a more water-efficient shower head, a gentler product. The central question is no longer how often you “must” shower, but what makes sense for your skin, the environment and your time.

One thing is clear: the move towards showering less is not about laziness, but a blend of health awareness, sustainability - and a touch of fascination with technology that reimagines the daily wash.