Can You Use Mouthwash or Toothpaste on Invisalign Trays? A Tustin Dentist's Answer
No to both, at least not directly on the trays. Toothpaste is abrasive enough to scratch clear aligner plastic, which clouds it and gives bacteria more surface to grip. Mouthwash, particularly anything colored or alcohol-based, can stain the trays or break down the material if they're soaked in it. Both are fine for your actual teeth; neither is the right choice for cleaning the trays themselves.
Quick Answer
Keep mouthwash and toothpaste for your teeth. For the trays, plain water, a soft brush with clear, unscented soap, or an actual aligner cleaner is a safe option.
Key Takeaways
- Toothpaste scratches Invisalign trays. Even a "gentle" formula is abrasive enough to dull the plastic and cloud its clarity over time.
- Mouthwash isn't formulated for plastic. Dyes can stain trays, and alcohol content can degrade certain aligner materials with repeated exposure.
- Both are perfectly fine for your teeth. Just remove your trays first, use mouthwash and toothpaste as normal, then rinse before the trays go back in.
- The safe cleaners for trays themselves: lukewarm water, a soft-bristled brush with clear unscented liquid soap, or Invisalign Cleaning Crystals (or a similar retainer-cleaning product).
- Cloudy or scratched trays aren't just a cosmetic issue. Scratches give bacteria more places to hide, which works against the hygiene benefit Invisalign is supposed to offer over braces.
If you're new to treatment,
Transformation Dental Partners' Invisalign page covers what to expect from the process itself.
Why Toothpaste Is a No for Trays (Even Though It's Fine for Teeth)
Toothpaste is designed to be mildly abrasive on purpose. That's how it lifts plaque and surface stains off enamel, which is a much harder material than the thermoplastic used in Invisalign trays. Run that same mild abrasion against the trays every day, and it adds up: tiny scratches accumulate across the surface, and each one is a foothold for plaque and bacteria that a smooth tray wouldn't hold onto.
The visible effect shows up first. Scratched trays lose their clarity and develop a permanent haze that no amount of cleaning can fix, defeating the whole "nearly invisible" appeal of the treatment. The less visible effect matters more: a rougher surface holds onto more biofilm that causes odor and can contribute to decalcification (those white spot marks) on the teeth underneath, especially if hygiene slips elsewhere, too.
Brushing your actual teeth with toothpaste before the trays go back in is exactly the right routine. It's brushing the trays with it that causes the problem.
Why Mouthwash Isn't the Right Call for Cleaning Trays
Mouthwash is built for a mouth, not a piece of custom plastic. Two ingredients cause the trouble:
- Dyes. Most mouthwash is colored blue, green, or amber. Those dyes can tint clear aligner plastic with repeated exposure, working against the entire point of a "nearly invisible" tray.
- Alcohol. Many mouthwashes are alcohol-based, and alcohol can dry out or degrade certain plastics over time with repeated contact, potentially affecting how well the tray fits.
Using mouthwash normally, as a rinse for your mouth with the trays removed, is completely fine. The issue is specifically soaking or rinsing the trays themselves in it, which is a habit some patients pick up thinking it will double as a cleaner and freshener in one step.
What to Use on Your Trays Instead
The safe routine is simpler than either toothpaste or mouthwash, and takes about the same amount of time:
- Rinse in lukewarm water every time the trays come out, before anything dries onto them.
- Brush gently with a soft-bristled toothbrush (a separate one from your teeth) and a small amount of clear, unscented liquid soap. Colored or scented soap can stain the same way mouthwash does.
- Soak periodically in Invisalign Cleaning Crystals or a similar retainer-cleaning product, following the package directions, to reach bacteria and odor that brushing alone misses.
- Avoid hot water entirely. It can warp the thermoplastic and throw off the custom fit, which affects how well the tray actually moves your teeth.
That combination, rinse, gentle brush, occasional soak, keeps trays clear without the scratching or staining risk that toothpaste and mouthwash carry.
What About Vinegar, Baking Soda, or Hydrogen Peroxide?
Mouthwash and toothpaste aren't the only home remedies patients ask about. Vinegar, baking soda, and hydrogen peroxide come up often enough that they're worth addressing directly, since the same logic applies to all three.
Baking soda is a mild abrasive, similar to toothpaste, so scrubbing trays with a baking soda paste carries the same risk of scratching. Vinegar is acidic enough that soaking trays in it regularly can degrade the plastic over time, even though a brief diluted rinse is unlikely to cause visible damage on its own. Hydrogen peroxide is sometimes suggested as a disinfecting soak, and while a very dilute solution is less likely to cause harm than the other two, it's still not what the trays were engineered for, and it doesn't clean any better than a purpose-made retainer cleaner or clear soap.
None of these are worth the risk when the safe alternative, clear soap or an actual aligner-cleaning product, costs about the same as what's probably already in the kitchen cabinet.
What About Your Actual Teeth While Wearing Invisalign?
None of the above changes your regular oral hygiene. Brush with toothpaste and use mouthwash exactly as you normally would, just with the trays out. Then rinse your mouth (or at minimum swish with water) before putting the trays back in, so food particles and toothpaste residue aren't sealed against your teeth for the next 20-plus hours. Skipping that last rinse step is one of the more common reasons Invisalign patients develop new spots of decay despite brushing regularly.
Frequently Asked Questions
Can I use mouthwash on my Invisalign trays?
Not directly on the trays. Mouthwash is fine as a normal mouth rinse with your trays removed, but soaking or rinsing the trays themselves in mouthwash can stain them (from dyes) or degrade the plastic over time (from alcohol content).
Can I brush my Invisalign trays with toothpaste?
No. Toothpaste is mildly abrasive, which is fine for tooth enamel but scratches and clouds clear aligner plastic. Use a soft brush with clear, unscented liquid soap instead.
What's the best toothpaste to use while wearing Invisalign?
Any toothpaste you'd normally use on your teeth is fine, since it never touches the trays directly if you're following the correct routine. The concern is only about brushing the trays themselves.
Is it okay to soak Invisalign trays in mouthwash overnight?
No. Extended contact with mouthwash increases the risk of staining from dyes and potential degradation due to its alcohol content. Use a purpose-made retainer or aligner cleaner for soaking instead.
Can I clean my Invisalign trays with vinegar or baking soda?
Not recommended as a regular routine. Baking soda is abrasive like toothpaste, and regularly soaking trays in vinegar can degrade the plastic over time. A purpose-made aligner cleaner or clear, unscented soap does the job without the risk.
Will scratched or cloudy trays affect my treatment?
Not the tooth movement itself, but scratches give bacteria more surface area to cling to, which works against the hygiene benefits Invisalign is meant to offer. If your trays have gone consistently cloudy despite proper cleaning, it's worth mentioning at your next visit.
Trust & Authority
Transformation Dental Partners is led by Dr. Davin Li, DDS, a 2012 graduate of the USC Ostrow School of Dentistry (top 10% of his class), with advanced training in Invisalign, dental implants, and CEREC. Dr. Li also dedicates one day a week to in-home geriatric dental care across three counties and holds memberships in five professional dental organizations.
The American Dental Association's
MouthHealthy orthodontics guide is a useful reference alongside your dentist's direct advice for general aligner care guidance,
Questions About Your Invisalign Routine?
Dr. Li's team can walk you through the exact care routine for your specific aligners at your next visit, or before you start treatment.
Transformation Dental Partners is at 13372 Newport Ave, Suite G, Tustin, CA 92780.
Monday through Thursday, 8 AM to 5 PM, and Friday, 8 AM to 1 PM
(by appointment after 1 PM).
