
Morians Kiodo, a firm based in Iruma City, Saitama Prefecture, is known for developing a new kind of heat pack that is powerful enough to heat food without having to use a flame. It’s certainly a welcome invention for both outdoor adventurer types and people who happen to be experiencing power outages.
Now, the same company has utilized their technological prowess to create user-friendly hydrogen gas-emitting bath kits, which can be easily administered in the comfort of your own home. So easy, in fact, that our ace Japanese reporter Yoshio decided to–wait for it–test out the water for himself!
Japanese people love visiting natural onsen (hot springs) to relax and detoxify in the restorative waters, so it comes as no surprise that one of the latest trends in Japan is the DIY hydrogen bath kit for home use. The kits, which can be bought on Amazon Japan for 3,500 yen (US$29.33), include seven pure (99.99%) hydrogen-producing packets and a plastic dispensing container. According to the directions, each packet will emit 16 liters worth of hydrogen gas over the span of five hours. Also, there’s no need to worry about clean up–you can easily dispose of the packets in your household plastic trash after use.
So what’s the big deal about this whole hydrogen thing, anyway? According to some studies, hydrogen supposedly acts as a powerful antioxidant to combat harmful free radicals, which may cause cellular damage and lead to aging, diseases, or even cancer if accumulated in your body. Hydrogen molecules are exceedingly tiny, so they can easily permeate and be absorbed into the skin. Other beneficial side effects include increased blood circulation (which consequently raises body temperature) and an increase in metabolism.
With all those potential health benefits, our Japanese reporter Yoshio was eager to try out a hydrogen bath for himself. To his delight, the process of creating a hydrogen bath at home was also much simpler than he anticipated. Let’s now take a look at how you too can easily make your very own hydrogen bath using one of the above-mentioned bath packets.
▼The front and back view of a hydrogen bath packet
▼Simply tear open the packaging and insert the hydrogen packet into the dispensing case…
▼…then drop it into the bath water! Small weights are attached to the underside of the case, so it should easily sink to the bottom.
▼Almost immediately, the container will begin emitting hydrogen bubbles.
▼Oo-la-la! How do those bubbles feel, Yoshio?
▼An important point is to always keep the vessel fully submerged.
Here’s a custom-made video in case you want to see the bubbles in action:
So what’s Yoshio’s overall verdict? He reports that, while he was in the water, the hydrogen gas bubbles tended to cling to his skin and cause a pleasant tingling sensation. After he emerged from the bath, he felt refreshed and comfortably warm.
Yoshio advises that since the bubbles continue to emerge for approximately five hours, it’s a shame to use a packet just on yourself. Consider sharing the same bathwater with your family or friends (Japanese-style – i.e. showering before taking a dip!), to get the most out of those five hours. Or perhaps you can use a packet during a quiet, bromantic evening at home–maybe it’s the perfect solution for these guys come Valentine’s Day!
Source: Nikkan Kogyo Shimbun
Images & video: RocketNews24








Easy DIY open-air bath setup makes life at our Japanese country house better than ever【SoraHouse】
Eight unforgettable hot springs, as recommended by Japan’s “Professor Bath”
Creating an open-air hot spring bath (without a hot spring) at our cheap Japanese country house【Vids】
Japan’s final Penguin Suica train cards have already shipped, and when they’re gone, they’re gone
Farewell Final Ceremony announced for Tokyo’s life-size Gundam statue, will stream live
Japan approves foreign resident visa renewal fee increases of up to 967 percent, starts soon
Nonstop flights from U.S. to Okinawa return after 54 years, making travel faster than before
Starbucks Japan adds a gooey sweet potato Frappuccino to its menu this autumn
Starting this fall, you’ll be able to take a Pokémon Jet flight to Japan
Godiva Japan hops into tsukimi season with bunny and moon-themed chocolate assortments
Japan tripled its departure tax to fund tourism but is using the money on cherry blossoms and bears
McDonald’s Japan reveals exclusive new Tsukimi moon viewing collection for 2026
Tokaido Lumière Express: Stay overnight inside the Shinkansen from Osaka to Tokyo
7-year-old boy left behind on Mt. Fuji by his own dad
Sushi Bus: Japan’s first conveyor-belt bus lets you eat sushi while sightseeing around Tokyo
Nike x One Piece collection brings Devil Fruits to sneakers and streetwear in Japan
Anime fans can now wear a Seiko watch inspired by Japan’s One Piece Shinkansen
Foreign hiker on Mt. Fuji loses consciousness and dies, becoming climbing season’s second fatality
We recommend not buying one pack of Japan’s new convenience store corn soup-flavor fried chicken
Police in Japan looking for who’s responsible for dumping 80 loaves of bread on side of road [Video]
Japan’s double-decker portable rice cooker/bento maker is better than ever with new version
12-year-old British girl who went missing in Tokyo found safe after visiting anime sites around Yokohama
Air-conditioned dress shirts arrive in Japan to save working professionals from sweltering heat
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Japanese toilet aims to attract foreign tourists but not everybody is happy about it
Tokyo’s newest viral dessert is like a Japanese parfait inside a bread bun [Taste test]
New Japanese vending machine at Shinkansen station sells cups of ice on platform
Study finds hundreds of people in Indonesia legally named after Naruto, Inuyasha, other anime stars
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】