- Boundless
- Hydrogen water
Boundless hydrogen water.
Same pure water, same aluminum can, zero sugar and zero calories. The only difference is how much hydrogen is sealed inside.
Boundless hydrogen water is still drinking water with molecular hydrogen (H2) sealed into a 250 mL aluminum can. There are three cans, and the only difference is the hydrogen level: Detox 1.6 ppm, Sport 1.2 ppm and Kids 0.8 ppm. Every can is zero sugar and zero calories, with no sweeteners. Sold in packs of 24, at US$1.99 a can at the US launch.
By Boundless / Updated

Detox vs. Sport vs. Kids.
| Detox | Sport | Kids | |
|---|---|---|---|
| Hydrogen level | 1.6 ppm | 1.2 ppm | 0.8 ppm |
| Made for | Professionals, students and parents | Athletes, gym-goers and weekend warriors | Kids, and the parents packing their lunch |
| When | Long, hot or busy days, before and after a workout | Before and after training, and on hot days | Lunchboxes, sports practice and hot days |
| On the label | No sugar, no sweeteners, no additives, 0 calories | No sugar, no sweeteners, no artificial colors or flavors, 0 calories | No sugar, no sweeteners, no preservatives, no artificial flavors |
| Size | 250 mL can, 24 pack | 250 mL can, 24 pack | 250 mL can, 24 pack |
| Price | US$1.99 a can | US$1.99 a can | US$1.99 a can |

Detox
Clean. Clear. Energized.

Sport
Refresh. Recharge. Perform.

Kids
Pure. Simple. Fun.
Sealed in aluminum, on purpose.
- Hydrogen escapes plastic. H2 is the smallest molecule there is, so it slowly slips through most plastic bottles. Aluminum keeps it in.
- Every level is on the can. 1.6, 1.2 or 0.8 ppm. No charging, no tablets, no guessing.
- Drink it fresh. Keep it cold, open it when you're ready and finish it within about 30 minutes.
How the hydrogen gets in, and what nanobubbles are: nanobubble hydrogen water, explained.
Hydrogen water, in one paragraph.
Molecular hydrogen is studied as a selective antioxidant. A 2007 Nature Medicine study (Ohsawa et al.) found it neutralized the hydroxyl radical, one of the most reactive free radicals, while leaving useful signaling molecules alone. Small human pilot studies have since looked at antioxidant enzymes (Nakao et al., 2010) and exercise recovery (Aoki et al., 2012). Many human studies are still small, so we share the research as it stands.*
Hydrogen water questions.
What is canned hydrogen water?
It's still drinking water with molecular hydrogen (H2) dissolved into it, sealed in a can so the gas stays in. Boundless hydrogen water comes in 250 mL aluminum cans at three hydrogen levels: 1.6, 1.2 and 0.8 ppm.
Which Boundless hydrogen water should I choose?
Detox (1.6 ppm) is our highest level, for long workdays and study. Sport (1.2 ppm) is for training days. Kids (0.8 ppm) is our gentlest level, for lunchboxes and sports practice. The water, can and zero-sugar recipe are the same.
What does ppm mean on hydrogen water?
Parts per million: milligrams of hydrogen per liter of water. Water at room temperature and normal pressure holds about 1.6 ppm of hydrogen, so Detox is filled right up to that mark.
Why is the hydrogen water in a can instead of a bottle?
Hydrogen is the smallest molecule there is, so it slowly escapes through most plastics. Aluminum keeps it in.
How fast should I drink hydrogen water after opening?
Within about 30 minutes. Hydrogen starts leaving as soon as the can is open, so keep it cold and closed until you're ready, and sip straight from the can.
Does Boundless hydrogen water have sugar or calories?
No. Every can is zero sugar and zero calories, with no sweeteners.
Is hydrogen water carbonated?
No. Fizz comes from carbon dioxide. Hydrogen water is still water, so it tastes clean and flat, like premium still water.
Is Boundless Kids hydrogen water OK for children?
Kids is plain water with molecular hydrogen at our gentlest level, 0.8 ppm, and nothing else: no sugar, sweeteners, preservatives or artificial flavors. If your child has a medical condition, check with your pediatrician.
How much does Boundless hydrogen water cost?
US$1.99 a 250 mL can at the US launch. Detox, Sport and Kids are the same price, and the cans come in packs of 24.
Where can I buy Boundless hydrogen water?
It isn't on sale in the US yet; join the US launch list at uboundless.com to hear first. In Australia, Boundless is sold at WHSmith, healthylife and Everyday Market from Woolworths.
Boundless isn't on sale in the US yet. Join the list and you'll hear first.