Calvedon

Floss or Brush First? How to Order Your Daily Oral Care Routine

Floss or brush first? Either order works if you keep it consistent. Here is a clear daily sequence for string floss, water flossers, electric flossers and mouthwash.

TC

The Calvedon Team

October 26, 2026 · 6 min read

Tidy bathroom vanity with a toothbrush, string floss and towel by the sink

Whether you floss or brush first matters less than doing both every day, so choose one order and keep it. Flossing first loosens food particles before the brush and toothpaste reach the spaces between teeth. If your dentist gives you a different order, follow that.

This guide gives you a clear sequence for string floss, a water flosser and mouthwash, shows where an electric flosser fits, and ends with a checklist you can run every day.

Floss or Brush First: How to Decide

Both orders have a reason behind them. Pick the one you will repeat, because a routine you skip is not part of your oral hygiene at all.

The case for flossing first

Flossing before brushing dislodges food particles and plaque from between teeth. The brush and toothpaste then move through a mouth that is already cleared, and any fluoride toothpaste you use can reach those spaces as you brush.

The case for brushing first

Some prefer to brush first and floss to finish. This works if it means you actually floss. If you tend to skip flossing when you are tired, putting it first removes the chance to skip it.

A simple way to choose

  • Floss first if you want the toothpaste to reach between teeth while you brush.
  • Brush first if you floss more reliably as the last step.
  • Ask your dentist at your next visit if you have braces, bridges, implants or other dental work.
Bathroom counter set up for deciding whether to floss or brush first
Set the tools out in the order you plan to use them.

The Daily Order, Step by Step

The table shows the order for each setup. Every row follows the same logic: clean between teeth, brush, then rinse if you use mouthwash.

Your setupStep 1Step 2Step 3
String floss and brushFlossBrushMouthwash, following the label, if used
Water flosser and brushWater flosser over the sinkBrushMouthwash, following the label, if used
String floss, water flosser and brushFlossWater flosserBrush, then mouthwash if used
Any setup with mouthwashClean between teethBrushMouthwash, following the label

Checklist for one session

  1. Wash your hands and gather your tools.
  2. Clean between teeth with string floss, a water flosser or both.
  3. Brush all surfaces of your teeth with a soft toothbrush, manual or electric, following the time and technique your dentist gave you.
  4. Spit out the extra toothpaste.
  5. Use mouthwash if it is part of your routine, following its label.
  6. Rinse your tools and let them dry.

Using string floss

Wind the floss around your fingers and slide it between two teeth with a gentle back-and-forth motion. Curve it into a C shape against one tooth and move it along the side, just under the gumline. Use a clean section for each gap.

Where a Water Flosser Fits

A water flosser sends a stream of water between teeth and along the gumline. You can use it before brushing, after brushing, or in place of string floss if your dentist agrees. Pick one slot and keep it.

The HydroFlare is a rechargeable water flosser with a 200ml tank and four pressure modes: Soft, Normal, Strong and Pulse. Soft is a common starting mode for first-time users. It comes with four replacement nozzle tips, including orthodontic and standard types, and each tip is color-coded so people in a household can have their own.

HydroFlareIn this guideHydroFlare$59.99

Water flosser steps in the routine

  1. Add water to the tank and click your nozzle tip into place.
  2. Choose a pressure mode.
  3. Lean over the sink and hold the tip just above the gumline at a right angle.
  4. Move from tooth to tooth, letting the stream run over each area.
  5. Drain the tank, wipe the outside dry and set the unit back on its USB charger.
  6. Brush, then continue with the rest of your routine.

For technique and settings in more depth, read How to Use a Water Flosser: Step-by-Step Technique and Settings.

Field note

Keep the order the same on every device. If you floss before brushing with string, do the same with your water flosser so the habit stays one routine, not two.

Where an Electric Flosser Fits

An electric flosser, such as a cordless electric water flosser, takes the same slot as any water flosser: before or after brushing, over the sink. The order rule does not change with the device.

The HydroPulse is a cordless electric water flosser with an extra-large water tank. It charges with the included USB cable and has settings from gentle to pulse mode. Gentle mode is the setting to begin with, giving a lighter flow while you get used to the tip along your gumline.

It can be guided around brackets, wires and other dental hardware. Pause briefly at each spot, move slowly and follow the quick-start guide for positioning. If you wear braces, ask your orthodontist how to fit it into your routine.

HydroPulseIn this guideHydroPulse$108.99
Adult leaning over a sink using an electric flosser as part of an evening routine
Lean over the sink and move the tip slowly along the gumline.

When to Use Mouthwash

Mouthwash goes after cleaning between teeth and brushing. Check the label for how long to swish and whether to wait before eating or drinking.

If you brush with a fluoride toothpaste, some labels and dentists advise using mouthwash at a different time than brushing, such as after lunch. Ask your dentist which approach fits the products you use. Do not swallow mouthwash, and keep it away from young children.

Morning, Night and How Often

Brushing is a twice-a-day habit, once in the morning and once before bed. Flossing is generally a once-a-day habit, and you can choose the time that you will keep. Night is a fit if you want to clear the day's food before sleep, but morning works if that is when you will do it.

If you floss at night, you do not have to repeat it in the morning unless you want to or your dentist asks you to. The same goes for a water flosser. Add it to the session where you already clean between teeth.

StepMorningNight
Clean between teethOnce a day, at the time you chooseOnce a day, at the time you choose
BrushYesYes
MouthwashIf part of your routineIf part of your routine

Common Mistakes

  • Changing the order every day, which makes the habit harder to repeat.
  • Skipping the gumline, where plaque collects along the edge of each tooth.
  • Rinsing with water right after brushing when your dentist has asked you to leave toothpaste on.
  • Leaving water in the flosser tank. Drain it after each session.
  • Using one nozzle tip for several people. Use color-coded tips so each person has their own.
  • Pressing hard with floss. Use a gentle motion against the tooth.

Persistent bad breath, bleeding or any change in your mouth is a reason to book a dental visit, not to adjust your routine alone.

Build a Habit That Lasts

Keep tools where you can see them, and attach the routine to something you already do, like turning off the bedroom light. If you want a water flosser or electric flosser, browse our Dental & Oral Care Devices collection and compare tank size, modes and nozzle tips against how you plan to use them.

Frequently asked questions

Either order works. You can use the water flosser first, over the sink, then brush so the toothpaste reaches teeth that have already been cleaned between. Pick one slot, keep it daily, and ask your dentist if you have braces or other dental work.

Use mouthwash after cleaning between teeth and brushing, following the label for swish time. If your toothpaste contains fluoride, ask your dentist whether to rinse right away or at a different time of day, such as after lunch.

Flossing is generally a once-a-day habit. Choose the time you will keep, morning or night. If you floss at night, you do not need to repeat it in the morning unless your dentist asks you to.

The 3-3-3 rule is an informal rule of thumb, not a dental standard, and its wording differs from one source to the next. Use it only as a reminder to keep a regular routine, and follow the brushing time and frequency your dentist gives you.

Both orders work. Flossing first loosens food particles so the brush and toothpaste can reach between teeth. Brushing first suits you if you floss more reliably as the final step. Choose the habit you will repeat daily.