Does at-home teeth whitening really work? Experts explain. (2024)

Anyone who’s undergone professional teeth whitening treatments knows how expensive and time-consuming the service can be.Professional treatments typically cost over $200 and appointments can last 90 minutes or longer. Thankfully, many oral care brands offer more cost-effective, over-the-counter teeth whitening treatments you can use at home. Experts say they aren’t as strong as in-office treatments, but they can tackle minor discoloration if used correctly and consistently.

Below, I talked to two dentists about what you can expect fromat-home teeth whitening treatments and how to shop for them. I also rounded up our favorite options from brands like Crest, Colgate and Burt's Bees.

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The best at-home teeth whitening products

With expert guidance in mind, I rounded up a handful of at-home teeth whitening products across types and price points. I included options with the ADA Seal of Acceptance, those NBC Select staff members have tried themselves, NBC Select Wellness Award Winners and other highly rated treatments I think you should know about.

Best teeth whitening strips and trays

Lumineux Teeth Whitening Strips

What we like

  • Good for sensitive teeth

Something to note

  • Nothing to note at this time

If you have sensitive teeth, I recommend Lumineux’s whitening strips since they don’t contain peroxides or bleaches that can be painful for those with sensitive teeth, according to the brand. The strips are made with coconut oil, sage oil, lemon peel oil and dead sea salt, natural ingredients that help lift stains off teeth, according to Lumineux. One box contains 42 teeth whitening strips, which is enough for 21 treatments. I notice a difference in the shade of my teeth when I use these whitening strips as directed for 30 minutes a day and I frequently repurchase them.

Type: Strips |Application time: 30 minutes

Crest 3D Whitestrips Classic Vivid

What we like

  • Easy to use
  • No-slip grip
  • ADA-approved

Something to note

  • May cause sensitivity

Crest 3D Whitestrips are currently the only ADA-approved whitening strips — they also won an NBC Select Wellness Award. The Classic Vivid strips come in a pack of 24, which is enough for 12 treatments. Strips are made with hydrogen peroxide and have a no-slip grip that helps them stick to teeth. Crest also offers other types of whitestrips including Brilliance White, Glamorous White and Sensitive, all of which are ADA-approved.

Type: Strips |Application time: 30 minutes

Opalescence Go Teeth Whitening Trays

What we like

  • Easy to use
  • Minty flavor
  • Pre-filled trays

Something to note

  • High price point

Opalescence Go Teeth Whitening Trays — which have a 4.3-star average rating from over 1,880 reviews on Amazon — come prefilled with a minty gel that contains 10% hydrogen peroxide. The trays are single-use and flexible, allowing them to conform to your teeth and the shape of your mouth, according to the brand. Treatments last 30 to 60 minutes.

Type: Trays |Application time: 30 to 60 minutes

Best teeth whitening toothpastes

Nu Skin AP 24 Toothpaste

Nu Skin AP 24 Toothpaste$23.00

What we like

  • Thick, smooth texture
  • Good for sensitive teeth

Something to note

  • Contains SLS

Nu Skin’s AP 24 Toothpaste, an NBC Select Wellness Award winner, is formulated with gentle abrasives to remove surface stains from teeth and brighten their appearance, according to the brand. The fluoridated toothpaste, which comes in a 4-ounce tube, has a neutral vanilla mint flavor. It also contains sodium lauryl sulfate (SLS), an ingredient found in many toothpastes that acts as a detergent for your teeth, as explained by experts in our guide to the best toothpastes. I tried Nu Skin’s toothpaste and prefer its thicker, smoother texture to most thinner, gel-like options. Plus, it doesn’t irritate my sometimes sensitive teeth.

Type: Toothpaste |Application time: 2 minutes

Burt’s Bees Whitening Toothpaste

What we like

  • ADA-approved
  • SLS-free

Something to note

  • Nothing to note at this time

This ADA-approved whitening toothpaste from Burt’s Bees is formulated with hydrated silica to help remove surface stains from teeth, according to the brand. The toothpaste has a minty flavor and comes in a 4.7-ounce tube.

Type: Toothpaste |Application time: 2 minutes

Best teeth whitening mouthwash

ACT Whitening + Anticavity Fluoride Mouthrinse

What we like

  • Alcohol-free
  • Dye-free
  • Contains fluoride

Something to note

  • May cause sensitivity

ACT’s Whitening + Anticavitymouthwashuses hydrogen peroxide and fluoride to brighten your teeth and prevent cavities, while leaving out alcohol and dyes, according to the brand. The mint-flavored wash comes in a 16.9-fluid-ounce bottle and has a 4.5-star average rating from over 6,300 reviews on Amazon.

Type: Mouthwash |Application time: 2 minutes

LED teeth whitening products

Colgate Optic White ComfortFit LED Whitening Kit

What we like

  • Timed treatments
  • Easy to clean mouthpiece

Something to note

  • Smartphone required for use

This kit comes with a flexible LED whitening light that molds to the shape of your teeth, providing uniform coverage, according to the brand. It’s powered by your phone — you plug the device’s cable into an Apple or Android smartphone, and you can continue to use your phone during 10 minute treatments. The kit comes with a whitening pen filled with hydrogen peroxide gel that you brush over your teeth before using the light. Colgate recommends using the kit once a day for 10 days to see the best results. When I used the kit as directed, my teeth looked noticeably brighter.

Type: LED light |Application time: 10 minutes

Auraglow Teeth Whitening Kit with LED Accelerator Light

What we like

  • Rechargeable
  • Timed treatments
  • Wireless

Something to note

  • Nothing to note at this time

If you’d rather use a rechargeable, wireless whitening light, Auraglow’s kit comes with a battery-powered tray that has built-in LED lights to help activate the included carbamide peroxide whitening gel. You squeeze the gel into the tray before placing it in your mouth and turning the device on to start a 30 minute treatment. The light — which has a 4.1-star average rating from over 44,450 reviews on Amazon — comes with a charging case and cable.

Type: LED light |Application time: 30 minutes

Best teeth whitening pens

Colgate Optic White Overnight Teeth Whitening Pen

What we like

  • Overnight whitening
  • Precision applicator tip
  • Portable

Something to note

  • Nothing to note at this time

Beyond its whitening strips, Colgate offers a whitening pen filled with hydrogen peroxide gel. You use the applicator tip to brush the gel over clean teeth and leave it on overnight. Each pen can be used up to 35 times and the whitening gel is safe for those with sensitive teeth, according to the brand.

Type: Pen |Application time: Overnight

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How I picked the best at-home teeth whitening products

Everyone’s teeth are different, so finding a whitening treatment that works for you will likely involve some trial and error, says Dr. Ilona Casellini, the founder of and a dentist at Swiss Quality Smile in Los Angeles, California. Pay attention to how your teeth react to different products, specifically noting which ones lighten tooth color the best with the least amount of sensitivity.

While shopping for at-home teeth whitening treatments, experts recommend considering the following factors.

  • Active ingredients: Hydrogen peroxide and carbamide peroxide are the most common whitening agents products rely on to get rid of tooth stains, according to the ADA. These active ingredients penetrate tooth enamel and break down discoloration without softening or thinning teeth, experts say.
  • Strength: Every teeth whitening product is made with a certain percentage of active ingredients, and the higher that percentage is, the stronger its whitening capabilities are. But the most powerful whitener may not be the best option for you, says Dr. Matt Messina, an assistant professor at The Ohio State University College of Dentistry and the clinic director at Ohio State’s Upper Arlington Dentistry. If you’ve never whitened your teeth before or have a history of tooth sensitivity, he recommends starting with products that contain lower concentrations of active whitening ingredients and gradually increasing if you can tolerate it.
  • Product type: At-home teeth whitening products are available as toothpastes, whitening pens, whitening trays, mouthwashes and more. Think about which you prefer and which best fits into your lifestyle. How effective at-home teeth whitening products are greatly depends on using them consistently, so choose a product you can see yourself sticking with, says Casellini.
  • ADA Seal of Acceptance: The ADA Seal of Acceptance is the “gold standard” for oral care products, experts told us. When you see that seal, it means the brand submitted data and other materials to the ADA and the organization determined that the product meets specified safety and efficacy requirements. This does not mean that whitening products without the ADA Seal are ineffective — it just means brands have not submitted their products for the ADA to review.
What are the different types of teeth whitening products?

The teeth whitening treatment you choose is dependent on your preferences and your dentist's recommendations. Below, I outline different options:

  • Teeth whitening pens: If you’re looking for a portable teeth whitening option that you can travel with, many brands offer pens filled with a gel formula of whitening ingredients like hydrogen peroxide or carbamide peroxide. To use a whitening pen, you brush the gel on your teeth, leave it on for the specified amount of time and repeat as directed.
  • LED teeth whitening treatments: Some teeth whitening kits come with devices (kind of like mouth guards) that have built-in LED lights, which help activate the included whitening gel, experts told us. You add the whitening gel to the device or directly to your teeth, and wear it for a set amount of time. Once you own the LED light device, you can buy refills of the brand’s gel to continuously reuse it.
  • Mouthwash: Like whitening toothpaste, whitening mouthwash typically has a lower concentration of whitening agents, so its impact is minimal, experts told us. With that being said, whitening mouthwash can be a good option to use after a professional whitening treatment or if you’ve never whitened your teeth at home before.
  • Whitening toothpaste: Whitening toothpaste primarily relies on abrasives to help remove surface stains on teeth, according to the ADA. All toothpaste is mildly abrasive to scrub teeth clean, but whitening toothpaste typically contains ingredients that specifically target surface stains, like sodium bicarbonate, also known as baking soda.Whitening toothpaste is a great option to start with if you’ve never used other teeth whitening products since it typically has a lower concentration of active ingredients, experts told us. It tends to work best for surface stains and maintenance after you’ve used another form of whitening, says Messina.
  • Whitening strips: Whitening strips are typically coated with a thin layer of hydrogen peroxide or another bleaching agent, and they come in kits with multiple strips for the upper and lower teeth. As directed by the brand, you use the strips for a few days in a row for a set amount of time to gradually whiten your teeth.
  • Teeth whitening trays: Teeth whitening trays are similar to whitening strips — they adhere to teeth and whiten using active ingredients while you wear them. Some trays come prefilled, and others need to be filled with a whitening agent before you use them. Dental offices also sometimes make custom trays that fit the exact shape of your mouth to use with whitening gel.

Frequently asked questions

Tooth stains can occur on the interior and exterior of teeth. Those inside the teeth can result from aging or some genetic disorders, while exterior surface stains are usually associated with tobacco use and the consumption of pigmented food and drinks like coffee, red wine and dark fruits, says Casellini.

Whitening products tackle tooth discoloration differently depending on whether they’re targeting interior or exterior stains, but most rely in part on bleaching agents like hydrogen peroxide or carbamide peroxide. During treatments, these active ingredients penetrate enamel, seep into interior tooth tissues and lighten tooth color from the inside out, according to the ADA.

One of the biggest differences between teeth whiteners is the concentration of the active ingredients they’re formulated with, experts told us. The higher the concentration of the active ingredient and the longer it’s left on the teeth, the more effective the whitener typically is. But with higher concentrations of active ingredients comes concerns like tooth sensitivity and gum irritation. That’s why dentists are able to use whiteners with higher concentrations of active ingredients in their offices — professionals know how to whiten teeth based on your sensitivity level while protecting other parts of your mouth.

Whitening products that target interior stains often have a higher concentration of active ingredients since a chemical reaction is required to reach deeper inside the teeth. Those that target exterior discoloration usually have a lower concentration of active ingredients and rely on mechanical interventions like brushing with a whitening toothpaste to scrub stains off the enamel surface, thus dulling their appearance.

Teeth whitening is not for everyone. People who are unhappy with the color of their teeth or want to match their natural teeth to a crown or bridge are the best candidates for whitening, says Casellini. On the other hand, people who have prosthetics like crowns, bridges or veneers that already match the color of and are located very close to their natural teeth should not whiten them. Doing so can result in mismatched tooth colors since the natural teeth will get lighter and the prosthetics will stay the same, she says.

In-office whitening treatments are the most effective option since they’re formulated with higher concentrations of active ingredients, experts told us. This is especially the case if you have discoloration from oral issues like cavities and tooth decay, which may make teeth turn a dark gray color that won’t go away with at-home whitening, says Messina. The same goes for other oral problems like plaque build-up or gum irritation.

With that being said, at-home teeth whitening products can help correct more surface-level tooth discoloration. However, it’s crucial that you use whitening products consistently. “Most people are not compliant at home and therefore do not get the results they are looking for,” says Casellini. “In-office bleaching is more effective because you get instant gratification. In one session, patients usually get one to two shades lighter and all they have to do is relax while the dentist does the work.”

Teeth whitening is safe overall. However, experts say it's important to talk to your dentist before starting a whitening treatment at home to make sure it’s a viable path for you, especially if you’ve experienced tooth or gum sensitivity in the past. If you can’t handle a higher concentration of whitening agents, your dentist can help you find a product that works best.

While whitening your teeth at home, pay attention to how you feel, especially if you’re trying something new. If at any point you notice sensitivity on your teeth or gums while using at-home whitening products, stop using the whitening product immediately and contact your dentist.

One way to ensure you’re whitening your teeth safely is to follow the product’s directions. “If it says 30 minutes, an hour isn’t better,” says Messina. “It may instead dramatically increase your tooth sensitivity, making it hard to handle cold things like ice cream or even water.”

Whether it’s dental care, skin care or hair care, anything used in excess can potentially cause damage. As far as at-home teeth whitening treatments, prolonged, continuous and incorrect use of bleaching products can be potentially harmful over time, says Casellini. “Even though at home bleaching products usually have a lower concentration of peroxide, if used excessively, it can cause your teeth to become dehydrated and brittle, not to mention overly sensitive,” she says. To prevent damage, follow a product’s directions exactly and limit how often you use at-home whitening products. Also be sure you follow a standard oral care routine that involves proper tooth brushing with fluoride toothpaste, flossing and mouthwash.

Beware of beauty fads and do-it-yourself approaches to teeth whitening, experts told us. They have not been studied as extensively as professional treatments or over-the-counter options, and can have negative side effects like reducing teeth hardness or increasing sensitivity, according to the ADA. A common example is using charcoal toothpaste — the abrasiveness of the ingredients can remove the enamel from your teeth overtime, which Messina compares to sanding a floor. Other common DIY teeth whitening treatments include making pastes out of acidic fruits, vinegar and baking soda, as well as oil pulling, which involves swishing coconut oil in the mouth — these practices are not well-researched and are recommended against by the ADA and our experts.

Meet our experts

At NBC Select, we work with experts who have specialized knowledge and authority based on relevant training and/or experience. We also take steps to ensure that all expert advice and recommendations are made independently and with no undisclosed financial conflicts of interest.

  • Dr. Matt Messina is an assistant professor at The Ohio State University College of Dentistry and the clinic director of Ohio State’s Upper Arlington Dentistry.
  • Dr. Ilona Casellini is the founder of and a dentist at Swiss Quality Smile in Los Angeles, California.
Why trust NBC Select?

I am an associate updates editor at NBC Select who writes about dental care, including stories on electric toothbrushes, toothpaste, whitening toothpaste, kid’s toothpaste, floss and water flossers. For this article, I interviewed two experts about how to shop for at-home teeth whitening treatments and rounded up products that align with their guidance.

Catch up on NBC Select's in-depth coverage of personal finance, tech and tools, wellness and more, and follow us on Facebook, Instagram, Twitter and TikTok to stay up to date.

Zoe Malin

Zoe Malin is a reporter for NBC Select.

Does at-home teeth whitening really work? Experts explain. (2024)

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