How to Clean Your Clear Aligners (the Right Way)

To clean clear aligners the right way, rinse them every time they come out, gently brush them with a soft toothbrush and a little mild soap in lukewarm water once or twice a day, and avoid heat, coloured or scented cleaners, and anything abrasive. Kept clean this way, your trays stay clear, comfortable, and free of odor and staining for the length of your treatment.

Cleaning aligners is quick once it's a habit. Here's a plain-English routine you can actually keep, plus the methods to use and the ones to skip.

Why cleaning your aligners matters

Clear aligners sit against your teeth for around 20 to 22 hours a day, so anything that builds up on them stays pressed against your enamel and gums. Skipping cleaning tends to cause three problems:

• They stop being clear. A thin film of plaque and mineral buildup makes trays look cloudy or yellow — exactly the opposite of why you chose clear aligners.
• They start to smell. Bacteria and trapped food particles produce odor, and a warm, moist tray in your mouth all day is an easy place for them to grow.
• They can stain. Coffee, tea, wine, and coloured foods can tint a neglected tray, and stains are far harder to remove than to prevent.

A clean tray is also a more comfortable tray. When cleaning is fast and painless, it's easier to keep your aligners in for the hours that actually move your teeth.

The daily cleaning routine

Here's a simple routine that keeps aligners clear without much effort:

1. Rinse every time they come out. Whenever you take your aligners out to eat or drink, rinse them under lukewarm (not hot) water right away so saliva and debris don't dry onto the plastic.
2. Brush your teeth before they go back in. Reinserting aligners over food traps particles against your teeth all day. A quick brush first keeps both your teeth and your trays cleaner.
3. Gently brush the aligners once or twice a day. Use a soft-bristled toothbrush and a small amount of clear, mild soap. Brush the inside and outside of each tray in lukewarm water, then rinse thoroughly.
4. Store them clean and dry. When aligners aren't in your mouth, keep them in their case — never wrapped in a napkin, where they get lost or crushed. Let them air-dry before closing the case to discourage bacteria.

Two gentle cleanings a day — morning and night, when you're already at the sink brushing your teeth — is enough for most people. If you notice cloudiness or odor building up between cleanings, a rinse and a light brush at midday helps.

Safe vs. unsafe cleaning methods

The plastic used in aligners is softer and more delicate than a tooth, so the goal is always gentle. Use this list to stay on the safe side:

Safe to use:

• Lukewarm water for rinsing and brushing
• Clear, mild soap (unscented, uncoloured hand or dish soap in a small amount)
• A soft-bristled toothbrush kept just for your aligners
• Aligner cleaning crystals or tablets made for the job, used as directed on the package

Not safe to use:

• Hot or boiling water — heat can warp the plastic and change how the tray fits
• Toothpaste and other abrasives — most toothpaste contains grit that scratches the plastic, and tiny scratches trap bacteria and look cloudy
• Coloured or scented soaps — dyes can tint the trays and fragrances can leave a taste
• Harsh chemicals — bleach, alcohol, and mouthwash with dye or alcohol can discolour or degrade the plastic

When in doubt, gentler is better. If your provider gave you specific cleaning instructions for your aligners, follow those — they know your exact trays.

A deeper weekly clean

Alongside the daily routine, a longer soak once or twice a week lifts buildup that brushing alone can miss:

• Soak, don't scrub harder. Dissolve aligner cleaning crystals or a cleaning tablet (a category made for retainers and aligners) in a cup of lukewarm water and let the trays soak for the time listed on the package — usually around 15 to 30 minutes.
• Rinse well afterward. Rinse the aligners thoroughly under lukewarm water before putting them back in, so none of the cleaning solution lingers.
• Give the case a wash too. A clean tray in a dirty case doesn't stay clean. Wash the case with mild soap and lukewarm water and let it dry fully.

If you'd rather keep it simple, a gentle soak in lukewarm water with a small amount of mild soap works as a lighter version of the same idea. Avoid soaking in anything hot, coloured, or alcohol-based.

Keeping them clean while you wear and track them

Cleaning and wearing go hand in hand. Because you'll take your aligners out several times a day to eat, each of those moments is a natural cleaning checkpoint — rinse them out, brush before they go back in, and you've done most of the work without thinking about it.

Building that rhythm is the same habit that keeps your wear time on target. A tracker app can nudge the whole routine along: it reminds you when your aligners have been out too long, so you rinse and reinsert instead of leaving them sitting out, and it keeps your daily wear-time total honest. TrayJourney is built for exactly this kind of low-effort consistency.

For the bigger picture on staying on schedule, start with our clear aligner tracking guide. To make the habit stick, see aligner consistency habits, and for the wear-time side of the routine, read tracking your wear time.

Frequently asked questions

Can I use toothpaste to clean my aligners?

No. Most toothpaste contains mild abrasives that scratch the soft plastic. Those tiny scratches trap bacteria and make trays look cloudy over time. Use a soft toothbrush with clear, mild soap and lukewarm water instead.

Can I use hot water to clean my aligners?

No. Hot or boiling water can warp the plastic and change how your aligners fit, which can affect your treatment. Always rinse and clean with lukewarm water.

How often should I clean my aligners?

Rinse them every time they come out, and gently brush them once or twice a day — usually when you brush your teeth in the morning and at night. Add a deeper soak with cleaning crystals or a tablet once or twice a week.

Is it safe to soak aligners in mouthwash?

It's best avoided. Many mouthwashes contain dye and alcohol that can discolour or dry out the plastic. A purpose-made aligner cleaning soak, or plain lukewarm water with a little mild soap, is a safer choice. Follow any specific guidance your provider gives you.