What you need to know
A water flosser sprays a thin stream of water between the teeth and along the gumline. The Oral Health Foundation says some people find them easier than string floss, especially with braces, bridges, implants or limited hand movement.
They don't replace brushing or other interdental cleaning: brushes and floss scrape plaque from the tooth surface in a way water alone can't always manage, and research shows only short-term benefit for gum inflammation.
What to look for
- Decide between countertop (larger reservoir, more settings) and cordless (portable, easier to store).
- Look for adjustable pressure so you can start gently.
- Check which tips are included – orthodontic and implant tips are useful if you need them.
- Keep brushing twice a day and using floss or interdental brushes as your dental team advises.
Products to consider
Listed alphabetically, not ranked. Features are from the manufacturers’ UK websites. Some links may be affiliate links.
Waterpik Cordless Advanced water flosser
A rechargeable, cordless water flosser that is easier to store and travel with than a countertop unit, at the cost of a smaller…
Waterpik Ultra Professional countertop water flosser
Waterpik's countertop model with the widest range of settings and tips. A water flosser can make cleaning around braces, bridges…
Sources we used
Checked September 2026. Guidance changes, so always follow the advice of your own dental team. About our sources.