FAQs For Teeth Whitening And More

Choose from the topics below to find quick answers to our most commonly asked questions.

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General Teeth Whitening

What makes Opal™ teeth whitening products better than other leading brands?

Well, it’s simple! Opal™ is brought to you by Opalescence®, the world’s #1-selling professional whitening brand—trusted by 25,000+ dentists. We’ve been brightening up over 100 million smiles for the last 30 years, and we pride ourselves in only putting out safe, professional-caliber whitening products backed by dental science. All of our products are easy to use, great-tasting, vegan, certified gluten-free, and certified kosher. How’s that for a better way to whiten?

For a whitening brand you can trust to get you brilliant results every time, Opal™ by Opalescence® is the way to go.

What's the difference between Opal™ and Opalescence®?

Opal™ teeth whitening products were created to help you achieve brilliant results from the comfort of your own home. Opalescence® is our professional line of teeth whitening products, typically found at your friendly neighborhood dentist’s office. Both Opal™ and 

Opalescence® work wonders, but here are a couple of key differences: 

  • Strength Selection: Opal™ Prefilled Whitening Trays come in 6% and 11% options, giving you a choice in the whitening power you want. Opalescence Go™ Prefilled Whitening Trays, on the other hand, are professional-grade and usually only available through your dentist.
  • Patient Care: Opalescence Go™ Prefilled Whitening Trays include potassium nitrate and fluoride for dental patients in need of a little extra comfort.
How does Opal™ by Opalescence® teeth whitening work?

Our teeth whitening works by removing stains and discolorations from the enamel and dentin. The outer layer of the tooth is called enamel, and beneath the enamel is dentin. Enamel is thin and usually much lighter in color, while dentin is darker and makes up most of the tooth. Enamel can lose its color over time simply from age, but also from things like coffee, tea, tobacco, and other foods and beverages. Also, as we get older, our enamel can thin out, causing more dentin to show through, making the overall appearance of the tooth look less brilliant. The active ingredients in our whitening gels oxidize the discolored molecules deep down in your teeth to remove stains and whiten your smile comfortably. Plus, our original, patented formula is sticky and viscous, preventing the whitening gel from seeping out and ensuring your trays stay in place to brighten up your teeth.12

Do all Opal™ teeth whitening products use non-abrasive ingredients?

Great question! All Opal™ teeth whitening products are formulated to add brilliance to your smile in their own unique way. Let’s break it down for you:

  • Both our Classic and Gentle Prefilled Whitening Trays as well as our Whitening Tray Gel Refills use non-abrasive ingredients to safely brighten teeth.  
  • Our Original and Sensitivity Relief Whitening Toothpastes use a mildly abrasive silica to effectively remove surface stains13 and keep your teeth glowing.
I see white spots on my teeth after whitening. What should I do?

If you have white spots on your teeth, they may become more noticeable during the whitening procedure. A few days after you’ve completed your whitening treatment, the white spots will become less noticeable. Continue your whitening treatment until you reach your desired shade.

Are there any aesthetic concerns I should be aware of prior to whitening?

Be aware that crowns and fillings do not whiten. If your teeth are naturally translucent, they may become more translucent, giving a gray or darker appearance, rather than a whiter appearance. Some types of staining can take long periods of time and may require that you consult your dentist for professional whitening options.

Where are Opal™ teeth whitening products made?

Our products are proudly made with love and care in South Jordan, Utah.

Do I need to refrigerate Opal™ teeth whitening products?

There’s no need to chill your Opal™ teeth whitening products! Just find a cool place for them to hang out and keep them handy for your brilliant routine.

Do I need to have an in-person exam or consult my dentist before using Opal™ teeth whitening products?

While you can go ahead and use Opal™ teeth whitening products without a special appointment, it's always a good idea to keep up with those routine dental check-ups. We recommend seeing your dentist before you start whitening, just to make sure you’re good to glow!

Are Opal™ teeth whitening products FDA approved?

Since our teeth whitening products fall under the category of cosmetics, they don’t require FDA approval. That said, all Opal™ teeth whitening products have been tested for safety and effectiveness according to international standards. Our products also comply with the cosmetic regulations set by the FDA, including the new Modernization of Cosmetic Regulation Act of 2022. (In case you’re wondering.)

Are Opal™ teeth whitening products ADA approved?

Currently, we don't have the ADA (American Dental Association) seal on our products. However, we're committed to providing safe and effective teeth whitening formulations designed to safely brighten smiles.

Can I whiten my teeth more than once per day?

Opal™ by Opalescence® Prefilled Whitening Trays and Refill Syringes for use with a dentist-provided custom tray should be used once a day to achieve the most safe and effective way to get that brilliant smile you deserve. If you’re interested in additional daily whitening, however, we recommend using Opal™ Whitening Toothpaste twice daily.

Can a child use Opal™ teeth whitening products? What are the age recommendations?

We recommend that these products not be used by children under 12 years of age. Safety first! As kids grow, their teeth and gums are still developing, and it's best to wait until they’re older before starting any teeth whitening treatments.

Are Opal™ teeth whitening products tested on animals?

No way! Opal™ teeth whitening products are cruelty-free and aren’t tested on animals.

Are Opal™ teeth whitening products vegan and/or kosher?

Yes! All Opal™ teeth whitening products are both vegan and kosher.

Are Opal™ whitening products gluten free?

Yes! All Opal™ teeth whitening products are gluten free.

Are Opal™ teeth whitening products safe for everyone to use?

Opal™ by Opalescence® provides a safe, comfortable way for most everyone to get a more brilliant smile. Results and treatment time may differ from person to person, depending on the stain and the level of whitening you’re looking for. Keep in mind, our products are not designed to whiten crowns, bridges, fillings and veneers. 

If you have gum disease, worn enamel, cavities or exposed roots, we recommend talking to your dentist, so that they can help choose the teeth whitening option that’s best for you.

Will Opal™ teeth whitening products make my teeth sensitive?

Tooth sensitivity can happen sometimes after teeth whitening. Opal™ whitening has not been shown to weaken tooth enamel14, so if you feel any discomfort, there’s no need to worry! If your teeth feel sensitive, it’s usually temporary and should go away after whitening. There are also ways to treat sensitive teeth using products like our Sensitivity Relief Whitening Toothpaste. Talk to your dentist to find the best option for your smile.

Can I use Opal™ teeth whitening products if I am pregnant, breastfeeding, or undergoing fertility treatment?

Like with other dental or medical treatments, you may be wondering if teeth whitening during pregnancy, breastfeeding or IVF is safe. While no studies have been done on the safety of teeth whitening during pregnancy, the ADA suggests that clinicians may consider recommending that teeth whitening be deferred during pregnancy.6 We agree and recommend that pregnant or breastfeeding women and women undergoing fertility treatment don’t use teeth whitening products.

Do teeth whitening lights work?

Current research shows that hydrogen peroxide (the ingredient used in our Prefilled Whitening Trays) or carbamide peroxide (the ingredient used in our Whitening Tray Gel Refills) are effective in safely brightening teeth. Teeth whitening lights don’t add any more brilliance to your smile.7 In fact, some studies have shown that using them can even harm your lips and gums.8? So, it's probably best to skip the lights and stick to your Opal™ teeth whitening routine.

Do activated charcoal teeth whitening products work?

Charcoal can be messy and get stuck at your gumline, which isn't great for your dental hygienist to deal with. We recommend Opal™ whitening toothpaste which successfully whitens by removing surface stains and is gentle enough to use daily without damaging your enamel.

Can I use Opal™ teeth whitening products with crowns, veneers, fillings or other dental work?

Yes! It’s safe to use our teeth whitening products on both natural and unnatural tooth surfaces. Our unique formulations will not affect the color or shade of a crown, veneer, implant, filling or tooth restoration. But, you can use our products to whiten your natural teeth to better match your dental work.

If you are whitening your teeth before a bonding procedure, talk to your dentist. We recommend avoiding any whitening treatments for 7–10 days before a bonding procedure.9-11

How quickly can I whiten my teeth?

Every smile responds differently to whitening treatments and teeth whitening results may vary by age. Some stains and shades of teeth are easier to whiten than others. When whitening, keep in mind that the natural color of your teeth will affect your whitening results. Compare strengths and wear times for Opal™ teeth whitening products and talk with your dentist for help choosing the best option to add brilliance to your teeth.

How long do teeth whitening results last?

Opal™ teeth whitening products are formulated to provide lasting whitening results, leaving you with a brighter smile you'll love. However, there are a few things that can make teeth lose their brilliance over time. Things like genetics, diet, age, some medications (like tetracycline) and habits (like smoking) may affect how long your whitening results last. Luckily, all of our products are quick and easy to use, so you can keep your whitening routine going—and help your smile stay glowing.

Can I use expired Opal™ teeth whitening products?

We don't recommend using our products beyond their expiration date. It's always a good idea to keep your teeth whitening essentials fresh and up-to-date. Your smile deserves the best!

Is it possible to whiten a dead tooth?

Yes! It is possible to whiten a dead tooth. But, keep in mind that if you whiten all of your teeth at once, that dead tooth might still stand out. So, we suggest talking with your dentist to see how you can whiten that particular tooth to match your brilliant smile.

Can I eat or drink after whitening?

Once you've brushed all the whitening gel off your teeth, you're good to go and eat or drink whatever you like! Just keep in mind that some foods and drinks might leave stains on your whitened teeth, so remember to keep up with your whitening routine.

Should I avoid certain food or drinks like wine or coffee?

Let's face it, some of our favorite foods and drinks are known to leave stains on our teeth. If that happens to you, don't worry. Just use Opal™ teeth whitening products as part of your cleaning routine to keep your teeth looking brilliant!

My teeth and/or gums are feeling sensitive. What should I do?

Some people might feel a little temporary discomfort in their gums, lips, throat, tongue or teeth from whitening. We recommend using our Sensitivity Relief Whitening Toothpaste before and after whitening to help soothe sensitive teeth. If you're still feeling discomfort after whitening, you can always reach out to your dentist. But don't worry, these side effects usually go away in just 1–3 days.

Shipping & Returns

Where do you ship?

Opal™ by Opalescence® only ships within the 50 United States. For the time being, we don’t offer international shipping.

How long will it take for my order to arrive?

It usually takes about 5 business days for your order to reach your doorstep. Orders placed before 11:00 a.m. CST, Monday through Friday will be shipped to you the very same day! If you place your order after 11:00 a.m. CST, we’ll make sure it’s headed your way on the next business day.

How can I track my order?

As soon as your order sets off on its journey, we’ll send you a shipping confirmation with your tracking number. So you can stay in the glow and see when your brilliant items will arrive!

How does your satisfaction guarantee work?

Opal™ by Opalescence® stands behind all of our brilliant teeth whitening products. In fact, we’re so confident you’ll love your results within 30 days or we’ll give you your money back. No questions asked. View our 30-Day Satisfaction Guarantee to learn how you can request a refund if for any reason you are not smiling about our products.

How do I return a product?

If you want to return your Opal™ teeth whitening products—there’s no hard feelings! Just visit our Returns Center to learn about our Return Policy and how to send your order back to us with ease.

How do I make an exchange?

While we do not currently offer exchanges, we’ve got a simple solution for you! If you need to switch things up, just request a return by visiting our Returns Center. Once that’s done, you’re free to make a new purchase of your preferred Opal™ teeth whitening products.

I can’t find an answer to my question. Is there someone who can help me?

Absolutely! Our brilliant customer service team would love to help answer all your questions.

Just shoot us an email at help@opalsmile.com and you’ll hear back from one of our friendly team members within a single business day.

Account & Orders

What forms of payment do you accept?

We gladly accept Visa, Mastercard, American Express, Diners Club, Shopify Payments, Apple Pay, Google Pay, and Meta Pay.

Can I use insurance, HSA, or FSA to cover the cost of Opal™ teeth whitening products?

Sorry! Unfortunately, we don’t accept insurance, HSA, or FSA payments for any Opal™ teeth whitening products at this time.

There’s a problem with my order. What should I do?

No worries! Our brilliant customer service team is happy to help get things sorted out and put a smile back on your face. Just shoot us an email at help@opalsmile.com and you’ll hear back from one of our friendly team members within a single business day.

How do subscriptions work? Is there a minimum commitment for a subscription?

Subscriptions are a brilliant way to keep your smile glowing! Sign up to automatically order your favorite Opal™ teeth whitening products as often as you need to keep up with your routine. And here’s the best part: There's no minimum commitment. Change, skip, or cancel anytime.

How do I change or cancel my subscription?

Making changes or saying goodbye to your subscription is hassle-free! Just log into your account to change, skip or cancel your order at any time. It’s as easy as a couple of clicks, and you’re all set.

I can’t find an answer to my question. Is there someone who can help me?

Absolutely! Our brilliant customer service team would love to help answer all your questions.

Just shoot us an email at help@opalsmile.com and you’ll hear back from one of our friendly team members within a single business day.

Whitening Toothpaste

What’s the difference between Opal™ Original Whitening Toothpaste and Opal™ Sensitivity Relief Whitening Toothpaste?

Both of our toothpastes offer the same brilliant whitening benefits, but our Sensitivity Relief formula goes the extra mile for gentle smiles, featuring potassium nitrate to help soothe sensitive teeth.

Does Opal™ Sensitivity Relief Whitening Toothpaste whiten as well as the Original formula?

Yes! Our Sensitivity Relief formula offers the same teeth-whitening benefits of our Original Whitening Toothpaste, but it also contains potassium nitrate to help soothe sensitive teeth.

What’s the difference between Opal™ Whitening Toothpaste and regular toothpaste?

Opal™ Original Whitening Toothpaste packs some extra perks compared to your ordinary toothpaste. It’s sweetened with Xylitol, which may reduce the risk of tooth decay, and it has a unique and pleasant Cool Mint flavor for fresh breath that lasts. Plus, our mild-abrasive formula is kind to teeth and gums.

For the most gentle smiles, our Sensitivity Relief Whitening Toothpaste offers the same brilliant benefits as our Original Whitening Toothpaste, but it also contains potassium nitrate to help soothe sensitive teeth. The best part? Both formulas are safe for everyday use, so you can keep them in your whitening routine. 

Is Opal™ Whitening Toothpaste the same as Opalescence® Whitening Toothpaste?

You bet! Opal™ Whitening Toothpaste is essentially the same formula you’ll find in our professional Opalescence® Whitening Toothpaste.

When will I see noticeable results after using Opal™ Whitening Toothpaste?

When you use Opal™ Original or Sensitivity Relief Whitening Toothpaste as part of your daily whitening routine, you can whiten your teeth up to two shades in as little as two weeks15!

If I have sensitive teeth, can I still use Opal™ Original Whitening Toothpaste?

While Opal™ Original Whitening Toothpaste is safe for daily use—if you’re dealing with sensitivity, we recommend trying our Sensitivity Relief formula. It’s uniquely formulated to provide the same teeth-whitening benefits as our Original formula, but it also has potassium nitrate to help soothe your sensitive smile. It’s a win-win!

Does Opal™ Whitening Toothpaste deliver the same results as other Opal™ whitening products?

Not quite. Opal™ Whitening Toothpaste works its magic on the surface stains of your teeth, actively removing them to brighten your smile15. On the other hand, the whitening gels in our Prefilled Whitening Trays and Whitening Tray Gel Refills are formulated to whiten deeper below the surface of your teeth.

Can I use Opal™ teeth whitening products with crowns, veneers, fillings or other dental work?

Yes! It’s safe to use our teeth whitening products on both natural and unnatural tooth surfaces. Our unique formulations will not affect the color or shade of a crown, veneer, implant, filling or tooth restoration. But, you can use our products to whiten your natural teeth to better match your dental work.

If you are whitening your teeth before a bonding procedure, talk to your dentist. We recommend avoiding any whitening treatments for 7–10 days before a bonding procedure.9-11

Can I use Opal™ Whitening Toothpaste on the same days that I use Opal™ Prefilled Whitening Trays or my custom trays with Opal™ Whitening Gel?

Absolutely! The whitening formula in our Whitening Toothpastes is different from what’s in our Whitening Gels, and they complement each other perfectly. As a reminder, we recommend brushing with Opal™ Whitening Toothpaste after each meal or at least two times a day for the brightest results.

How does Opal™ Whitening Toothpaste whiten teeth?

Opal™ Whitening Toothpaste uses a mildly abrasive silica to effectively remove surface stains on your teeth13, but don’t worry! It’s totally enamel-safe.

What is the active ingredient in Opal™ Whitening Toothpaste?

In Opal™ Original Whitening Toothpaste, the active ingredient is Sodium Fluoride, which is all about protecting that precious enamel. Opal™ Sensitivity Relief Whitening Toothpaste features a dynamic duo of active ingredients: Sodium Fluoride and Potassium Nitrate (to help soothe sensitive smiles).

How much fluoride is in Opal™ Whitening Toothpaste?

Opal™ Whitening Toothpastes pack a safe and effective 0.25% sodium fluoride, following the general guidance for toothpaste. So you can brush with brilliance and clean with confidence.

Does Opal™ Whitening Toothpaste contain activated charcoal?

Nope, you won’t find any activated charcoal in our toothpastes. We only use powerful, yet gentle ingredients to safely brighten your smile.

Is Opal™ Whitening Toothpaste more of a gel or paste?

It’s a paste! Safe for everyday brushing, it’s the perfect way to kick off your whitening routine.

What flavor is Opal™ Whitening Toothpaste?

Both of our Whitening Toothpastes come in a Cool Mint flavor for fresh breath that lasts. It’s like a little burst of brilliance with every brush.

What toothbrush should I use with Opal™ Whitening Toothpaste?

We recommend using a toothbrush with soft bristles. It's gentle on teeth and gums while ensuring effective cleaning and better care for your smile.

How many times per day is it safe to use Opal™ Whitening Toothpaste?

It’s best to brush with Opal™ Whitening Toothpaste twice per day for Sensitivity Toothpaste and after each meal for our Original Toothpaste as part of your brilliant routine.

Can I use Opal™ Whitening Toothpaste if I have braces or other work like dental crowns?

Absolutely! Opal™ Whitening Toothpastes is safe for daily use on any type of dental work. We believe that all smiles deserve to be brilliant.

What happens if I swallow Opal™ Whitening Toothpaste?

While we don’t recommend eating Opal™ Whitening Toothpaste, or any toothpaste for that matter, there’s no need to worry! If you accidentally swallow more than the usual amount for brushing, it’s a good idea to get medical help or contact a Poison Control Center, just to be on the safe side.

How long will a tube of Opal™ Whitening Toothpaste last me?

It depends on how often you brush and how much toothpaste you use with each brushing! Typically, your full-size tube of Opal™ Whitening Toothpaste can last over two months.

What is the shelf life for Opal™ Whitening Toothpaste?

Your Opal™ Whitening Toothpaste will stay fresh for up to 48 months. So feel free to stock up and keep that smile glowing!

Prefilled Whitening Trays

What is the difference between Opal™ Classic Prefilled Whitening Trays and Opal™ Gentle Prefilled Whitening Trays?

Our Gentle formula contains a lower hydrogen peroxide content (only 6%) compared to our Classic formula (11%), making it perfect for even the most sensitive smiles. If you’re concerned about sensitivity but still looking to safely brighten your smile, our Gentle Prefilled Whitening trays are made especially for you!

Are Opal™ Prefilled Whitening Trays the same as Opalescence Go™ Prefilled Whitening Trays?

No. While both Opal™ Prefilled Whitening Trays and Opalescence Go™ Prefilled Whitening Trays are very effective at whitening teeth, they have a few key differences. 

  • Only available through your dentist, Opalescence Go™ Prefilled Whitening Trays are professional grade trays containing potassium nitrate and fluoride to provide extra comfort. 
  • Opal™ Prefilled Whitening Trays feature two formula strengths: Classic (11% hydrogen peroxide) and Original (6% hydrogen peroxide) to suit your comfort level, and can be easily ordered online for convenient, at-home teeth whitening.
Do Opal™ Prefilled Whitening Trays provide the same results as professional whitening treatments?

Many people notice quick, visible results—up to 4-5 shades whiter16—after using Opal™ by Opalescence® Prefilled Whitening Trays. That being said, everyone responds differently to teeth whitening treatments and everyone’s teeth whiten at different rates. Some stains are easier to treat than others. Even age can impact the rate at which your teeth whiten! If in doubt, we recommend you visit your dentist for a pre-whitening consultation, so that they can help you make the right choice. 

Do I need to see my dentist before I use Opal™ Prefilled Whitening Trays?

No. However, if you have pre-existing sensitivity when it comes to your teeth, we recommend consulting your dentist before using any teeth whitening products.

Do I need impressions or molds to use Opal™ Prefilled Whitening Trays?

Not at all! Opal™ by Opalescence® Prefilled Whitening Trays use the heat from your mouth to conform to your teeth for a perfect fit that keeps you comfortable while you brighten your smile.

Can I reuse my Opal™ Prefilled Whitening Trays with Whitening Gel Refills?

No. Opal™ Prefilled Whitening Trays are designed for one-time use. Once you’ve finished brightening your smile with your trays, go ahead and discard them.

Do I need to brush my teeth before I use Opal™ Prefilled Whitening Trays?

We recommend giving your teeth a quick scrub with Opal™ by Opalescence® Original or Sensitivity Relief Toothpaste after using your prefilled whitening trays.

Can I use Opal™ teeth whitening products with crowns, veneers, fillings or other dental work?

Yes! It’s safe to use our teeth whitening products on both natural and unnatural tooth surfaces. Our unique formulations will not affect the color or shade of a crown, veneer, implant, filling or tooth restoration. But, you can use our products to whiten your natural teeth to better match your dental work.

If you are whitening your teeth before a bonding procedure, talk to your dentist. We recommend avoiding any whitening treatments for 7–10 days before a bonding procedure.9-11

How many days in a row can I use Opal™ Prefilled Whitening Trays?

If you don’t have any sensitivity of the gums or teeth, you can whiten daily until you reach your desired shade. If sensitivity occurs, take a few days off between tray treatments.

How long should I wait between treatments when using Opal™ Prefilled Whitening Trays?

We recommend waiting at least 24 hours between treatments.

I just finished a full box of Opal™ Prefilled Whitening Trays and I want my teeth to be whiter. Can I use another box right away?

If you don’t have any sensitivity of the gums or teeth, then yes, you can use another box of Opal™ Prefilled Whitening Trays right away. If sensitivity occurs, take a few days off between treatment trays. If you have additional questions, consult your dentist for professional whitening options.

What happens if I wear my Opal™ Prefilled Whitening Trays for longer than the recommended wear time?

The chances for sensitivity may increase if the trays are worn for longer than the recommended wear time. Please refer to the safety information on the box.

What if I experience sensitivity every time I whiten even if I follow the instructed wear time?

We recommend wearing the trays for less time, and for you to give it a few days between treatments. This will take a little longer to whiten your teeth, but you may be more comfortable. If sensitivity of the gums and teeth persists, visit your dentist.

How do Opal™ Prefilled Whitening Trays conform to my teeth?

The innovative Ultra fit tray conforms by adhering to your teeth using the warmth of your mouth and a combination of Opal™ Prefilled Whitening Trays sticky viscous gel and light suction. You will cause gingival irritation if you press the trays against your teeth. Refer to the instructions on your Opal™ Prefilled Whitening Trays box.

Do Opal™ Prefilled Whitening Trays extend to my back teeth?

The Opal™ Prefilled Whitening Trays can extend to your back teeth depending on the size of your mouth. The trays are as good or better than what is currently on the market. If the size of the tray does not meet your needs, consult your dentist for professional whitening options.

Can I use Opal™ Prefilled Whitening Trays if I’m already using a dentist-provided tray?

Yes, you can use both, just not on the same day. If your dentist has provided you a tray, you can purchase our whitening refill syringes to use in your tray.

What materials are Opal™ Prefilled Whitening Trays made from?

Refer to the box for a list of ingredients and/or visit our product pages for allergy concerns.

Do Opal™ Prefilled Whitening Trays align or straighten my teeth?

No, Opal™ Prefilled Whitening Trays only brighten your smile.

Can I use Opal™ Prefilled Whitening Trays if my teeth aren’t straight?

Yes, Opal™ Prefilled Whitening Trays conform to your teeth, giving you a brilliant smile that’s uniquely yours.

Can I use Opal™ Prefilled Whitening Trays if I have braces or aligners?

Yes! You can use Prefilled Whitening Trays, even if you've got braces or aligners. Our unique formulations also won’t affect the color or shade of your dental work.

Can I wear Opal™ Prefilled Whitening Trays while sleeping?

No. We recommend you follow the instructions on the package. And, if you need something to entertain you while you’re brightening your smile, follow us on social.

What are the recommended wear times for Opal™ Prefilled Whitening Trays?

We recommend you wear your Opal™ Prefilled Whitening Trays for 30 minutes, according to the instructions on the package.

What are the active ingredients in Opal™ Prefilled Whitening Trays?

Opal™ Gentle Prefilled Whitening Trays contain Glycerin, Aqua (Water), Hydrogen Peroxide, PVP, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Potassium Hydroxide, Silica, Dipotassium Phosphate, Xylitol, Citric Acid, EDTA, Mentha Piperita Oil, Sucralose.

Opal™ Classic Prefilled Whitening Trays contain Glycerin, Aqua (Water), Hydrogen Peroxide, PVP, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Potassium Hydroxide, Silica, Dipotassium Phosphate, Xylitol, Citric Acid, EDTA, Mentha Piperita Oil, Sucralose.

Do I need to apply the upper and lower trays at the same time?

Yes, we recommend brightening your smile with both upper and lower trays at the same time. Just follow the usage instructions on the package, and reach out if you have any questions.

Do you sell upper and lower trays separately?

No, Opal™ Prefilled Whitening Trays are only available in sets. Be sure to follow the instructions on the package, and use both upper and lower prefilled trays at the same time.

Are Opal™ Prefilled Whitening Trays available in different sizes?

Just one size! Opal™ Prefilled Whitening Trays are designed to fit adult mouths of all sizes, conforming to your unique smile for a comfortable whitening experience.

Can I use Opal™ Prefilled Whitening Trays with LED/UV lights for better results?

No. Current research shows that only hydrogen peroxide (the whitening agent used in Opal™ by Opalescence® prefilled whitening trays) or carbamide peroxide (the whitening agent used in Opal™ by Opalescence® teeth whitening gel syringes) are effective in whitening teeth. Light activation adds no additional benefit.7 In fact, some research shows that using a light for whitening can be harmful to lips and gums8.

Can I eat or drink after whitening?

Once you've brushed all the whitening gel off your teeth, you're good to go and eat or drink whatever you like! Just keep in mind that some foods and drinks might leave stains on your whitened teeth, so remember to keep up with your whitening routine.

What if the whitening gel gets on my gums?

Not to worry! Just brush, rinse and remove any gel that gets on your gums. It is perfectly normal to feel some temporary discomfort when whitening teeth. These side effects will usually subside within 1-3 days after discontinuing use. If you're still feeling some side effects after you’re finished, we recommend reaching out to your dentist for help.

What happens if I swallow the whitening gel?

If you accidentally swallow a little bit of the whitening gel—that's okay! But if you happen to swallow a larger amount, make sure to drink lots of water and get in touch with your healthcare provider, just to be safe.

Do Opal™ Prefilled Whitening Trays expire?

Like all good things, Opal™ Prefilled Whitening Trays don’t last forever. Please check the expiration code on the box or tray to ensure they’re safe to use.

What is the shelf life for Opal™ Prefilled Whitening Trays?

When stored properly in a cool place, your trays have a shelf life of 24 months. Check your package for an expiration date.

Whitening Gel Refills

I don’t have a custom tray! How can I get one?

Reach out to your dentist for a pre-whitening consultation to discuss having a custom tray made—or try our convenient Prefilled Whitening Trays.

Can I use the Opal™ Whitening Gel Refills with my Opal™ Prefilled Whitening Trays?

No. Opal™ Whitening Gel Refills are intended for dentist-provided trays only. Check with your dentist if you’d like to have a custom tray made.

Is this the same product that I get from my dentist?

No, Opal™ by Opalescence® Whitening Gel features a different formulation from the product you buy from your dentist.

Which whitening gel strength is right for me?

Take a look at our whitening gel strength chart to see which formula is right for you.

If you still have questions, we recommend visiting your dentist for a pre-whitening consultation to choose the professional option that best fits your needs.

Can I use this product with LED/UV lights for better results?

No. Current research shows that carbamide peroxide (the whitening agent used in Opal™ by Opalescence® teeth whitening gel syringes) or hydrogen peroxide (the whitening agent used in Opal™ by Opalescence® pre-filled whitening trays) are effective in whitening teeth. Light activation adds no additional benefit.7 In fact, some research shows that using a light for whitening can be harmful to lips and gums.8

Can I use Opal™ teeth whitening products with crowns, veneers, fillings or other dental work?

Yes! It’s safe to use our teeth whitening products on both natural and unnatural tooth surfaces. Our unique formulations will not affect the color or shade of a crown, veneer, implant, filling or tooth restoration. But, you can use our products to whiten your natural teeth to better match your dental work.

If you are whitening your teeth before a bonding procedure, talk to your dentist. We recommend avoiding any whitening treatments for 7–10 days before a bonding procedure.9-11

Should I brush my teeth before and/or after whitening?

We recommend giving your teeth a quick scrub with Opal™ by Opalescence® Original or Sensitivity Relief Toothpaste before and after applying your dentist-provided whitening trays.

How often can I use Whitening Syringe Refills?

If you do not have any sensitivity of the gums or teeth, you can wear it daily for the recommended wear time in the instructions.

Can I use Whitening syringe refills if I have sensitive teeth?

We recommend using the lowest percentage available and wearing your trays for less time. You can also take a few days off between treatments. This will take a little longer to whiten your teeth, but you may be more comfortable. If sensitivity of the gums and teeth persists, visit your dentist.

Are Whitening Syringe refills available for people with sensitive teeth?

Opal™ by Opalescence® recommends you start with the 15% concentration for sensitive teeth.

Can I use Whitening Gel Refills if I was previously using a different whitening product with my custom tray?

Yep! No problem.

Can I use Whitening Gel Refills along with other Opal™ whitening products?

Opal™ by Opalescence® oral care products can be used daily in conjunction with a whitening treatment.

Can I use Whitening Gel with my night guards?

No. Whitening Gels are designed to be used with custom whitening trays or full mouth clear aligners and retainers. Consult your dentist for additional information.

How long should I wait between treatments when using Whitening Gel Refills with my dentist-provided tray?

If you do not have any sensitivity of the gums or teeth, you can wear it daily for the recommended wear time in the instructions.

Do you have an Opal™ Whitening Gel strength greater than 35%?

No, that’s our highest-strength formula. But you can always consult with your dentist for more professional whitening options.

How do I apply Opal™ Whitening Gel Refills to my custom, dentist-provided tray?

Just express one continuous bead of teeth whitening gel into trays, totaling approximately ⅓ to ½ of the syringe per tray. You can always refer to the instructions on the back of your Opal™ by Opalescence® Teeth Whitening Gel Syringe package.

Can I apply Opal™ Whitening Gel Refills directly to my teeth?

No. You should apply Opal™ Whitening Gel to your custom, dentist-provided tray, per the instructions on the back of the package.

How much Opal™ Whitening Gel should I use per tray?

Express one continuous bead of teeth whitening gel into trays, approximately ⅓ to ½ of the syringe per tray. For more info, check the instructions on the back of your Opal™ by Opalescence® Teeth Whitening Gel Syringe package.

What are the recommended wear times for using Opal™ Whitening Gel Refills with my dentist-provided tray?

The recommended wear time varies according to the formula strength:

  • Opal™ Whitening Gel 15%: 4 to 6 hours
  • Opal™ Whitening Gel 20%: 2 to 4 hours
  • Opal™ Whitening Gel 35%: 30 to 60 minutes
Can I eat or drink after whitening?

Once you've brushed all the whitening gel off your teeth, you're good to go and eat or drink whatever you like! Just keep in mind that some foods and drinks might leave stains on your whitened teeth, so remember to keep up with your whitening routine.

What if the whitening gel gets on my gums?

Not to worry! Just brush, rinse and remove any gel that gets on your gums. It is perfectly normal to feel some temporary discomfort when whitening teeth. These side effects will usually subside within 1-3 days after discontinuing use. If you're still feeling some side effects after you’re finished, we recommend reaching out to your dentist for help.

What happens if I swallow the whitening gel?

If you accidentally swallow a little bit of the whitening gel—that's okay! But if you happen to swallow a larger amount, make sure to drink lots of water and get in touch with your healthcare provider, just to be safe.

What are the active ingredients in Opal™ Whitening Gel Refills?

Opal™ Whitening Gels contain a powerful whitening ingredient -- either carbamide peroxide or hydrogen peroxide. Peroxide gels break down into water, oxygen, and reactive oxygen molecules. These reactive oxygen molecules oxidize the bonds of
discolored stain molecules. By changing the stained molecules, the tooth appearance becomes lighter17.

The full list of ingredients varies by strength:

  • Opal™ Whitening Gel 15%: Glycerin, Water (Aqua), Carbamide Peroxide, Xylitol, Carbomer, PEG-6, Sodium Hydroxide, Mentha Piperita Oil, EDTA
  • Opal™ Whitening Gel 20%: Glycerin, Water (Aqua), Carbamide Peroxide, Xylitol, Carbomer, PEG-6, Sodium Hydroxide, Mentha Piperita Oil, EDTA
  • Opal™ Whitening Gel 35%: Glycerin, Water (Aqua), Carbamide Peroxide, Carbomer, PEG-6, Hydrogen Peroxide, Xylitol, Sodium Hydroxide, Mentha Piperita Oil, EDTA, Sucralose
What is the shelf life for Opal™ Whitening Gel Refills?

When stored properly in a cool place, Opal™ Whitening Gel Refills have a shelf life of 24 months. Check your Opal™ by Opalescence® Teeth Whitening Gel Syringe package for an expiration date.

How many treatments are included in each pack of Opal™ Whitening Gel Refills?

Each pack includes four whitening syringes. Instructions recommend to express  ⅓ to ½  of gel into each tray, giving you around 4-6 treatments per pack.

How do I clean my custom tray?

You can clean your custom trays with a soft brush and warm water. For more information, we recommend reaching out to the dentist who provided you with your custom tray.

  1. Basting RT, Rodrigues AL Jr, Serra MC. The effects of seven carbamide peroxide bleaching agents on enamel microhardness over time. J Am Dent Assoc. 2003;134(10):1335-42.

  2. Al-Qunaian TA. The effect of whitening agents on caries susceptibility of human enamel. Oper Dent. 2005;30(2):265-70.

  3. Clark LM, Barghi N, Summitt JB, Amaechi BT. Influence of fluoridated carbamide peroxide bleaching gel on enamel demineralization. J Dent Res 85(Spec Iss A): 0497, 2006 (www.dentalresearch.org).

  4. Amaechi BT, Clark LM, Barghi N, Summitt JB. Enamel fluoride uptake from fluoridated carbamide peroxide bleaching gel. J Dent Res 85(Spec Iss A): 0498, 2006 (www.dentalresearch.org).

  5. Browning WD, Myers M, Downey M, Pohjola RM, Brackett WW. Report on low sensitivity whiteners. J Dent Res 85(Spec Iss A): 1650, 2006 (www.dentalresearch.org).

  6. Tooth whitening/Bleaching: Treatment Considerations for Dentists and Their Patients. ADA Council on Scientific Affairs. September 2009 (revised November 2010).

  7. Mondelli RF, Azevedo JF, Francisconi AC, Almeida CM, Ishikiriama SK. Comparative clinical study of the effectiveness of different dental bleaching methods - two year follow-up. J Appl Oral Sci. 2012;20(4):435–443. doi:10.1590/s1678-77572012000400008

  8. Bruzell EM, Johnsen B, Aalerud TN, Dahl JE, Christensen T. In vitro efficacy and risk for adverse effects of light-assisted tooth bleaching. Photochem Photobiol Sci. 2009;8(3):377–385. doi:10.1039/b813132e

  9. Da Silva Machado J, et al. The influence of time interval between bleaching and enamel bonding. J Esthet Restor Dent. 2007;19(2):111-8; discussion 119.

  10. Spyrides GM, et al. Effect of whitening agents on dentin bonding. J Esthet Dent. 2000;12(5):264-70.

  11. Unlu N, Cobankara FK, Ozer F. Effect of elapsed time following bleaching on the shear bond strength of composite resin to enamel. J Biomed Mater Res B Appl Biomater. 2008 Feb;84(2):363-8.

  12. Caughman WF, Frazier KB, Haywood VB. Carbamide peroxide whitening of nonvital single discolored teeth: case reports. Quintessence Int. 1999;30(3):155–161.

  13. Çakmakçioğlu O, Yilmaz P, Topbaşi BF. Clinical evaluation of whitening effect of whitening toothpastes: A pilot study. OHDMBMC. 2009:8(4);6–13.

  14. Metz MJ, Cochran MA, Matis BA, Gonzalez C, Platt JA, Pund MR. Clinical evaluation of 15% carbamide peroxide on the surface microhardness and shear bond strength of human enamel. Oper Dent. 2007;32(5):427-436. doi:10.2341/06-142

  15. Dursun MN, Ergin E, Tekce AU, Gurgan S. Which whitening toothpaste with different contents is more effective on color and bond strength of enamel?. J Esthet Restor Dent. 2023;35(2):397-405. doi:10.1111/jerd.12968

  16. Cordeiro D, Toda C, Hanan S, et al. Clinical evaluation of different delivery methods of at-home bleaching gels composed of 10% hydrogen peroxide. Oper Dent. 2019;44(1):13–23. doi:10.2341/17-174-C

  17. Kwon SR, Wertz PW. Review of the Mechanism of Tooth Whitening. J Esthet Restor Dent. 2015 Sep-Oct;27(5):240–257