Dentist noticed
Six weeks of daily use and my hygienist asked what changed. Gentle mode is genuinely gentle, and it charges maybe once a fortnight.
Beauty Tech
Cordless Water Flosser
Written and reviewed by the Soielle team. We research the sleep-beauty essentials and devices we sell and keep every product detail factual and current. Last updated August 2026.
4.5 · 2 reviews£29.99
£36.99
Save 19%Flossing you'll actually do. A pressurised water jet cleans between teeth and along the gumline in about a minute, reaching the spots string floss misses around crowns, braces and tight gaps.
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- Free UK delivery, dispatched within 1–2 business days
- Easy 30-day returns, no hassle
- 30-day satisfaction guarantee on all purchases
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Cordless and USB-rechargeable with multiple pressure modes from gentle to deep clean, plus a travel-friendly design with a built-in reservoir. Comes with interchangeable jet tips for the whole household.
- Multiple pressure modes including a gentle setting
- Built-in reservoir, cordless and USB rechargeable
- Interchangeable jet tips included
- IPX7 water resistant
- Start on the gentle mode for the first week
- Complements brushing: it does not replace it
- Dispatched within 1–2 business days of your order.
- Free shipping on all UK orders: estimated delivery 7–10 business days.
- Easy 30-day returns and a 30-day satisfaction guarantee on all purchases.
- 24-hour cancellation window after placing your order.
- Defective or damaged items are replaced at no cost to you.
Why you'll love the Cordless Water Flosser
About a minute, once a day
the reason to own one is compliance, not novelty. Most people who bought string floss with good intentions are not using it. A jet you point along the gumline takes about a minute and asks nothing of your fingers, so it survives contact with a real Tuesday night.
Gentle mode, and you start there
multiple pressure settings, and the lowest is genuinely low. First week on gentle: gums that are not used to being cleaned between will let you know, and pressure is the thing everyone gets wrong on day one.
Cordless, so it stays on the shelf
USB rechargeable with a built-in reservoir and an IPX7 water-resistant body, so it lives in the bathroom rather than needing a socket and a countertop base. Interchangeable tips mean the household shares the handle, not the nozzle.
£29.99, between two shelves
the UK market splits cleanly (live prices, 2026-07-31): unbranded marketplace units at £5.69 to £13, supermarket and mid-tier at £17 to £25, then the brand tier from £36 to £80. This sits above the disposable end and below the badge, with free UK delivery and 30 days to change your mind.
Do dentists recommend water flossers?
As an addition to brushing, broadly yes. As a replacement for it, no, and any page telling you otherwise is selling harder than it is informing. Worth knowing before you buy: the NHS guidance on keeping your teeth clean covers dental floss and interdental brushes, and does not mention water flossers at all. It tells you flossing may reduce gum disease, tooth decay and bad breath by removing plaque along the gum line, that interdental brushes are an alternative especially where there are gaps, and that your dentist or hygienist can advise on the best way to clean between your teeth. That last line is the honest answer to this question. Your hygienist has looked in your mouth and we have not.
Where a water jet earns its place is the mouths string floss handles badly. Braces, bridges, implants and crowns are the standard examples, and so are tight contacts, arthritic hands and anyone who simply cannot get floss around their back molars without a fight. The device does not need dexterity, which is the practical reason people who never flossed start doing something daily.
What it will not do is scrape a tooth surface the way floss physically does. The two are not identical actions and the sensible position is that this is another way to clean between your teeth, not a licence to stop brushing twice a day with fluoride toothpaste. Our own product notes have said that since launch: it complements brushing, it does not replace it.
One more thing the marketing tends to skip. If your gums bleed for the first few days, that is common when you start cleaning between your teeth and it usually settles. If it is still happening after a week or two, that is a reason to see a dentist rather than to turn the pressure up.
How to use the Cordless Water Flosser
- 1
Fill the reservoir with warm water, not cold. Cold water on sensitive teeth is the fastest way to decide you hate the whole idea.
- 2
Click a tip into the handle until it seats properly, and set the pressure to the lowest mode for your first week.
- 3
Lean over the sink with your face down towards the basin, so water runs straight out rather than down your chin.
- 4
Put the tip in your mouth and close your lips loosely around it before you switch on. Aim at the gum line at roughly ninety degrees, holding the tip near the teeth rather than jammed against them.
- 5
Start at the back teeth and work forward, pausing a second or two in the space between each tooth. The whole mouth takes about a minute.
- 6
Switch the unit off before you take the tip out, or you will redecorate the mirror. Then empty the reservoir and leave it open to dry.
Care and safety
- Empty the reservoir after every use and leave it open to air dry. Water left standing in a warm bathroom is the one real hygiene failure with these devices.
- Rinse the tip after use and swap tips between people. The handle is shared, the nozzle is not.
- Replace jet tips every few months, or sooner if the tip is visibly worn or discoloured.
- The body is IPX7 water resistant, so shower and splash exposure is fine. Do not put it in the dishwasher and do not submerge the charging port.
- Charge over USB rather than leaving it on charge permanently, and let it run down occasionally if you store it unused.
Cordless Water Flosser: frequently asked questions
- Do dentists recommend water flossers?
- As an addition to brushing, generally yes, and particularly for braces, bridges, implants and crowns where string floss is awkward. It is worth knowing that NHS guidance on cleaning between your teeth covers floss and interdental brushes and does not mention water flossers at all, and that the same guidance says your dentist or hygienist can advise on the best method for your mouth. Treat a water flosser as another way to clean between your teeth rather than a replacement for brushing twice a day with fluoride toothpaste.
- Do you brush your teeth before or after using a water flosser?
- There is no settled answer, so pick the one you will keep doing. NHS guidance on dental floss says it is best to clean between your teeth before brushing, which would put the flosser first. The counter-argument, which manufacturers make, is that flossing after brushing shows you what brushing missed and keeps you motivated. Either order beats not doing it. If you follow the NHS line, remember to spit rather than rinse after brushing so the fluoride stays on your teeth.
- What are the downsides of a water flosser?
- Three honest ones. It is messy until you learn to lean over the sink and close your lips around the tip, which takes a day or two. It does not physically scrape the tooth surface the way string floss does, so it is an addition to brushing rather than a substitute for it. And it needs charging and drying out, which is one more object to maintain, whereas floss needs nothing. The reservoir also limits how long a session runs before a refill.
- Is a water flosser better than flossing?
- Better for the people who will not floss, which is most people. Different, rather than superior, for the people who already floss properly. The jet reaches around crowns, bridges and braces more easily and needs no dexterity, and that is the real-world advantage. String floss makes direct contact with the tooth surface in a way a water jet does not. If you are already flossing daily and happily, this is a convenience upgrade, not a correction.
- Should the water flosser tip touch your teeth?
- Hold it close to the teeth and gum line rather than pressed hard against them. Aim at roughly ninety degrees to the gum line, keep the tip moving slowly from the back teeth forwards, and pause a second or two between each tooth. Pushing the tip into the gum does not clean better and is the usual cause of soreness in the first week.
- Is it normal for my gums to bleed when I start?
- Some bleeding in the first few days is common when you start cleaning between your teeth, and it usually settles as the gums get used to it. Stay on the gentle setting while that happens rather than assuming more pressure will fix it. If your gums are still bleeding after a week or two, book a dentist or hygienist appointment: that is a sign to get looked at, not a sign to push harder.
Cordless Water Flosser
£29.99
Customer reviews
4.5Based on 2 reviews
Messy day one, fine after
You learn to close your lips around it quickly. Reaches around my crown like nothing else did. Travel case would be nice.
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