How to Clean Your Retainer: Clear, Hawley and Fixed, Without Damaging It
Updated: Oct 7
Rinse your retainer every time it comes out, brush it once a day with a soft brush and a little mild dish soap, and keep it away from hot water and toothpaste. A retainer is the custom appliance that holds your teeth where braces or Invisalign put them, and the details of cleaning it depend on which of the three kinds you wear.
Below are all three, then the questions people bring to the chair: the smell, the white film, the retainer that suddenly feels tight, and the one left on a lunch tray. If you are still choosing between fixed and removable, our post on fixed versus removable retainers compares them.
The short version
• Rinse a removable retainer in cool water whenever it comes out. Brush it daily with a soft brush and mild dish soap, and soak it in a retainer cleaning tablet once a week.
• Never use hot or boiling water, and keep toothpaste off clear plastic. Heat warps it and grit scratches it.
• A fixed retainer is cleaned in your mouth: brush along the wire and floss under it with a threader every day.
• If a retainer stops fitting, do not force it. Call. That problem gets harder the longer it waits.
Written by Dr. Gloria Jung, DDS, BSc, at Lux Dental in downtown Vancouver. Reviewed on 2 October 2026 against guidance from the American Association of Orthodontists, Invisalign and Cleveland Clinic, listed at the end of this post.
How do you clean a retainer?
Gently, and every day. A retainer sits against your teeth for hours, so it collects the same plaque your teeth do. The American Association of Orthodontists (AAO) puts it plainly: left on a retainer, plaque hardens into tartar, which is far harder to remove, and the retainer starts to smell.
The routine is short. What changes is the material.
The same guide is written out below.
Retainer | Every day | Once a week |
Clear (Essix, Vivera) | Rinse in cool water. Brush with a soft brush and mild dish soap | Soak in a retainer cleaning tablet for 10 to 20 minutes |
Hawley (wire and acrylic) | Rinse, then brush the acrylic and around the wire with a soft brush and dish soap | Soak in a retainer cleaning tablet for 10 to 20 minutes |
Fixed (bonded wire) | Brush along the wire as you brush your teeth. Floss under it with a threader | Nothing extra at home. Tartar the brush misses is removed at your cleaning |
What to avoid: on a clear retainer, hot water, toothpaste, alcohol mouthwash and bleach; on a Hawley, hot water, gritty pastes and bending the wire; on a fixed wire, hard or sticky food that can loosen it.
Clear retainers
Clear retainers (Essix, or Vivera if you finished Invisalign) are thin, moulded plastic. Use a soft brush that is not your toothbrush, so no toothpaste reaches the plastic. Brush inside and out, rinse, and let it dry before the case is closed.
Hawley retainers
A Hawley has an acrylic plate against the roof of your mouth (or behind the lower teeth) and a thin wire across the front teeth. Clean it like a clear one, with extra attention around the wire, where plaque tucks in. Hold it by the acrylic, not the wire, so the wire does not bend.
Fixed retainers
A fixed (bonded) retainer is a thin wire glued behind your front teeth, so it is cleaned in your mouth, and your regular fluoride toothpaste is exactly right. Brush along both edges of the wire, then pass floss under it between each pair of teeth with a floss threader. The AAO also suggests interdental brushes or a water flosser. Threading feels fiddly at first. It gets quicker.
Tartar likes the back of the lower front teeth, and a wire gives it more to hold on to. That is why a fixed retainer and regular cleanings go together.
How do you clean Invisalign retainers?
Exactly like any clear retainer. Invisalign's retainers are called Vivera, and Invisalign's own advice is a soft toothbrush with a non-abrasive toothpaste, brushed gently and rinsed well, or a 15-minute soak in its cleaning crystals. Those crystals are made for aligners as well, if you are still in treatment.
The AAO goes a step further and says to skip toothpaste altogether. I side with the AAO, for a practical reason: it is hard to tell from the tube which toothpastes are truly gentle, and dish soap removes the guesswork.
If you are considering Invisalign itself, our Invisalign page covers treatment at Lux.
Can I use toothpaste on my retainer?
Not on a clear or Hawley retainer. Toothpaste is made to polish enamel, and the AAO notes that many contain baking soda or other abrasive particles that leave fine scratches on plastic. Scratches turn a clear retainer cloudy, catch stains, and give bacteria somewhere to stay. Cleveland Clinic agrees that some toothpastes are too harsh for a retainer.
Mild dish soap on a soft brush does the job without the grit. The exception is a fixed retainer, which you brush with your normal toothpaste because it is bonded to your teeth.
If you were once told to scrub your retainer with toothpaste, you were not alone. It is common advice. I would simply rather you didn't.
Can you boil a retainer?
No. Boiling water, the dishwasher and a hot car can all ruin a removable retainer. The AAO warns that heat can warp plastic retainers and change their fit, and offers a simple test: if the water feels too hot on your skin, it is too hot for your retainer. Lukewarm is the ceiling.
"But Dr. Jung, boiling is how I sterilize everything else." Then keep doing it for everything else. A clear retainer is made by heating a sheet of plastic and pressing it over a model of your teeth. Heat is how it got its shape, and heat is how it loses it. A warped retainer can look perfectly fine and still no longer hold your teeth where they belong.
Where should you keep your retainer when it is out?
In its case, every time. The AAO's version is easy to remember: if it's not in your face, it should be in your case.
Cleveland Clinic warns against wrapping a retainer in a napkin, which makes it easy to throw away by accident, or carrying it loose in a pocket or bag. Keep it from pets too: the AAO notes they are drawn to the smell of saliva on it. Rinse the case when you clean the retainer, and replace it if it cracks or still smells.
So the whole routine fits in one line: rinse it, brush it with a soft brush, keep the water cool, and keep it in the case. No hot water, no toothpaste on clear plastic, and never a napkin.
Four habits to keep, three to drop. The same list is written out above.
How often should I clean my retainer?
Every day, with a rinse each time it comes out. The AAO's routine is a quick rinse in lukewarm water whenever you take the retainer out, a brush with dish soap once a day, and a soak in a retainer cleaning tablet or solution once a week for 10 to 20 minutes. Rinse it after the soak, before it goes back in.
Brush and floss your own teeth before the retainer goes back in, too, as Cleveland Clinic advises. A clean retainer over unbrushed teeth simply holds plaque against them overnight.
Why does my retainer smell?
Bacteria. A retainer is warm, damp and in your mouth for hours, and the AAO explains that bacteria living on it release the compounds you smell. A lasting odour usually means the daily brush has been skipped, or the retainer goes into a closed case wet.
Go back to the full routine, with a weekly tablet soak. Do not soak it in ordinary mouthwash: the AAO advises against it, because alcohol and other harsh ingredients can weaken or discolour the plastic. If the smell returns after a deep clean, the plastic may have fine cracks where bacteria hide, and the retainer is due for a look.
How do you get white spots off a retainer?
With a soak and a soft brush, if you catch them early. White, chalky spots are usually plaque and minerals from saliva that have hardened on the plastic, the tartar the AAO describes. They build up when saliva is left to dry on the retainer, which is why the rinse matters.
Soak it in a cleaning tablet, then brush gently. For stubborn spots or yellowing, both the AAO and Cleveland Clinic suggest a gentle scrub with baking soda and water on a soft brush. Keep that occasional rather than daily, since baking soda is mildly abrasive too, and never scrape a retainer with anything sharp. If the spots will not shift, or the plastic is cloudy all over, bring it to your next visit.
What should I do if my retainer no longer fits?
Stop, and do not force it. A retainer that will not seat means your teeth have moved or the retainer has warped. The AAO is direct about it: avoid forcing a retainer that does not fit or causes pain, and contact your dentist or orthodontist. Cleveland Clinic adds that there is nothing you can do at home to make it fit; it needs adjusting or replacing.
A retainer that is only a little snug is different. If you missed a night or two, wear it as prescribed. The AAO's guidance is that if it does not return to a comfortable fit within a day or two, or it hurts, it is time to have it checked.
Most retainer problems fall into one of these rows:
What you notice | What it usually means | What to do |
A cloudy film or white spots that brush off | Plaque and minerals from saliva | Brush daily and soak weekly. You do not need a visit |
A smell that returns after cleaning | Bacteria, or fine cracks in the plastic | Deep clean. If it keeps coming back, bring it in |
Slightly snug after a missed night or two | Teeth have started to drift | Keep wearing it. Call if it still feels tight after a day or two |
It will not go on, or it hurts | Teeth have moved, or the retainer has warped | Do not force it. Call us this week |
A crack, a bent wire or a warped edge | The retainer is damaged | Stop wearing it. Wear a spare if you have one, and call |
A fixed wire that feels loose, or a tooth that moves | The bond has come away | Call us soon. Do not pull at it |
You cannot find it | Nothing is holding your teeth | Wear a spare if you have one, and call this week |
Retainer tight, cracked or cloudy?
Monday to Saturday, 9am to 5pm, at 1631 Davie Street.
How long do retainers last?
There is no fixed expiry date. A removable retainer lasts as long as it fits, stays intact and can still be cleaned. That varies from person to person, and grinding your teeth at night shortens it.
The AAO's warning signs: a crack, a warped edge or a gap between retainer and teeth, a bent or loose wire, a smell or stain that survives a deep clean, or a fit that has changed. Clear plastic warps most easily, a Hawley's wire can bend, and a fixed wire can come loose, so each deserves a look at your regular visits.
What does last is the need for one. The AAO says a retainer is typically needed for life, though you wear it less often over time.
What should I do if I lose my retainer?
Call this week, and wear a spare tonight if you have one. Cleveland Clinic's advice is not to wait: the longer your teeth go without a retainer, the more they can shift, and the harder a new one becomes to fit. If you were given a spare, the AAO's advice is to wear it in the meantime.
A replacement is best made from a new impression of your teeth as they are now, not as they were when treatment ended. The AAO notes that a replacement may be a separate fee from the original treatment, and that insurance coverage varies, so ask us to check your plan before anything is made.
Lost it, or not sure it still fits?
Retainer checks at Lux Dental in downtown Vancouver
Lux Dental, downtown Vancouver.
A few practical things, since people ask:
We are open Monday to Saturday, 9am to 5pm. A Saturday visit means a loose wire or a tight retainer does not have to wait for a day off work.
Bring your retainer to your check-up. We look at the fit, the plastic or wire, and the teeth underneath, and tell you whether it needs a clean, an adjustment or a replacement.
We look after both kinds. Lux provides fixed and removable retainers, and we offer Invisalign if teeth have already moved and need straightening again.
We speak your language. I speak English, Korean and Mandarin, and our team also speaks Korean and Vietnamese.
Frequently asked questions
Can I use toothpaste on my retainer?
Not on a clear or Hawley retainer. Many toothpastes contain baking soda or other abrasive particles that leave fine scratches on plastic, according to the American Association of Orthodontists. Scratches turn a clear retainer cloudy and give bacteria somewhere to stay. Use a soft brush with mild dish soap instead. A fixed retainer is different: brush it with your normal fluoride toothpaste, because it is bonded to your teeth.
Can you boil a retainer to clean it?
No. Boiling water, very hot tap water and the dishwasher can all warp a removable retainer, and a warped retainer no longer holds your teeth properly. The American Association of Orthodontists suggests a simple test: if the water feels too hot on your skin, it is too hot for your retainer. Rinse and soak it in cool or lukewarm water only, and keep it out of a hot car.
How do I get white spots off my retainer?
White spots are usually plaque and minerals from saliva that have hardened on the plastic. Soak the retainer in a retainer cleaning tablet, then brush it gently with a soft brush. For stubborn spots or yellowing, an occasional gentle scrub with baking soda and water helps. If the spots will not come off, or the plastic stays cloudy, the retainer may need replacing.
Can I soak my retainer in mouthwash?
It is best not to. The American Association of Orthodontists advises against soaking a retainer in standard mouthwash, because alcohol and other harsh ingredients can weaken the plastic or discolour it. For a deeper clean, use a retainer cleaning tablet or solution once a week for 10 to 20 minutes, then rinse it in cool water before you put it back in.
How long do retainers last?
There is no fixed lifespan. A removable retainer lasts as long as it fits, stays intact and can be cleaned, and grinding your teeth shortens that. Replace it if it cracks, warps, has a bent or loose wire, stays cloudy or smelly after a deep clean, or no longer fits. The need for a retainer lasts much longer: usually for life, worn less often over time.
What should I do if I lost my retainer?
Wear a spare tonight if you have one, and call your dentist or orthodontist this week. The longer your teeth go without a retainer, the more they can shift, and the harder a new one is to fit. A replacement is best made from a new impression of your teeth as they are now. Ask the clinic to check your coverage first, since a replacement may be a separate fee.
Book a retainer check in downtown Vancouver
Cool water, a soft brush and the case. If it stops fitting, that part is ours.
If your retainer is tight, cracked, cloudy or missing, bring it, or the news, to Lux Dental. We are rated 4.9 on Google from 179 reviews at the time of writing, and we are open Monday to Saturday.
Or call 604-670-1256. Lux Dental, 1631 Davie Street, Vancouver. Monday to Saturday, 9am to 5pm.
Sources: American Association of Orthodontists, How to Clean Your Retainer at Home (5 June 2025, updated 15 April 2026), Retainers (updated 15 April 2026) and Tight Retainer? Here's What You Need to Know (28 October 2024, updated 15 April 2026); Invisalign, Do You Have to Wear a Retainer After Invisalign Treatment? (April 2024); Cleveland Clinic, Teeth Retainer (medically reviewed, updated 22 October 2025). Google rating and review count checked 2 October 2026.
Dr. Gloria Jung, DDS, BSc, Lux Dental
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