# How often should you use a water flosser?

Source: https://brushandfloss.co.uk/blog/how-often-to-use-a-water-flosser
Published: 2026-10-12
Publisher: Brush and Floss

**In short:** Most water flosser makers suggest using it once a day, at a time that suits you, and many say twice a day is fine. The NHS advises cleaning between your teeth as part of your routine and says your dental team can advise on the best method. Start on a low pressure, keep sessions to a minute or two, change the tip as the manual suggests and stop and ask your dentist if anything feels wrong.

Water flossers come with plenty of advice about how to use them, but less about how often. People ask whether once a day is enough, whether twice a day is too much, and how often the tips and the unit itself need replacing. This guide pulls together what makers generally say, what the NHS says about cleaning between teeth, and practical routine tips. It does not replace advice from your dentist or hygienist, who can tell you what suits your mouth.

## Once a day as a routine

Water flosser makers, including Waterpik, generally suggest using a water flosser once a day. Many people find the evening easiest, as part of their bedtime routine. A session usually takes a minute or two once you are used to it.

The NHS advises brushing twice a day for about two minutes with fluoride toothpaste and cleaning between your teeth. It mentions interdental brushes and floss, and says your dental team can recommend the best method for you. A water flosser is one way to clean between teeth; it does not replace brushing.

## Is twice a day too much?

Many makers say using a water flosser twice a day is fine, for example after breakfast and before bed. What matters more is a comfortable pressure and good technique. If your gums feel sore, bleed or you notice any change, ask your dentist rather than flossing harder or more often.

Using the flosser for much longer than needed, or at a very high pressure, does not add much. Start low and build up slowly. Our [how to use a water flosser](https://brushandfloss.co.uk/blog/how-to-use-a-water-flosser) guide covers technique.

## Before or after brushing?

Makers say either order works. Some people like to floss first to loosen debris, then brush; others prefer to brush and finish with the flosser. The NHS advises not rinsing with water or mouthwash straight after brushing, to keep the fluoride from toothpaste on your teeth, so many people floss first. If you add mouthwash to the tank, see [can you put mouthwash in a water flosser?](https://brushandfloss.co.uk/blog/water-flosser-with-mouthwash).

## How often to change tips

Tips wear and collect residue. Makers give replacement intervals in the manual; Waterpik suggests replacing standard jet tips every few months, and brush-style tips such as orthodontic tips more often. Replace any tip that is cracked, bent or sprays unevenly.

Give each person in the house their own tip. Most countertop flossers come with colour-coded tips for this.

| Task | How often |
| --- | --- |
| Floss | Once a day, or as your dental team advises |
| Empty and dry the tank | After each use |
| Rinse the tip | After each use |
| Clean the tank | Weekly |
| Descale in hard water | Every few months, per the manual |
| Change the tip | As the manual says |

A simple flosser upkeep plan

## How often to clean and descale

Empty and dry the tank after each use, clean it weekly and descale it every few months if you live in a hard water area, which covers much of England. Scale reduces pressure and can cause leaks. Our guide to [how to clean and descale a water flosser](https://brushandfloss.co.uk/blog/how-to-clean-a-water-flosser) covers the steps, and [Waterpik leaking](https://brushandfloss.co.uk/blog/waterpik-leaking) covers the most common fault.

## How long a flosser lasts

A water flosser does not have a fixed replacement date. Replace it when it no longer holds pressure after cleaning and descaling, leaks from the base, or a cordless battery no longer lasts a session. Check the warranty first; the Waterpik Sonic-Fusion 2.0 listing, for example, mentions a three-year limited warranty.

When you replace it, consider whether a different design would suit you better; see [cordless vs countertop water flosser](https://brushandfloss.co.uk/blog/cordless-vs-countertop-water-flosser).

## Fitting it into your day

The easiest way to make flossing a habit is to link it to brushing. A combined unit such as the Waterpik Sonic-Fusion 2.0, which has a sonic toothbrush and flosser in one, does both from one handle; it appears in our [best sonic electric toothbrush](https://brushandfloss.co.uk/best/best-sonic-electric-toothbrush) guide. If you are choosing a brush to go with a separate flosser, our [best electric toothbrush](https://brushandfloss.co.uk/best/best-electric-toothbrush) guide compares premium handles.

[See the Sonic-Fusion 2.0](https://brushandfloss.co.uk/best/best-sonic-electric-toothbrush)

## Frequently asked questions

**Can you water floss too much?** Using a very high pressure or flossing for a long time adds little. Keep to a comfortable setting and ask your dentist if anything feels wrong.

**Can you water floss twice a day?** Many makers say yes. Once a day is the usual routine.

**How long should a water flossing session take?** Usually a minute or two once you are used to it.

**How often should I replace my water flosser?** When it no longer works well after cleaning and descaling. There is no fixed interval.

## Buying guides on this topic

- https://brushandfloss.co.uk/best/best-sonic-electric-toothbrush
- https://brushandfloss.co.uk/best/best-electric-toothbrush
- https://brushandfloss.co.uk/best/best-electric-toothbrush-gentle-mode

## Sources

- [NHS: How to keep your teeth clean](https://www.nhs.uk/live-well/healthy-teeth-and-gums/how-to-keep-your-teeth-clean/)
- [Waterpik](https://www.waterpik.com/)