GLO Teeth Whitening

GLO Science Teeth Whitening (2021 Review): Overview & Types of Products

GLO Science™ is an award-winning, patented, and FDA-approved LED teeth whitening brand. They are the only at-home teeth whitening system that combines heat and blue LED light to give you faster results without sensitivity.

They offer two different at-home whitening kits, including GLO Brilliant™ and GLO Lit™. They also sell oral health products and professional teeth whitening kits for dentists.

The GLO Brilliant Teeth Whitening Device is clinically proven to whiten up to five shades lighter in five days.

However, everyone is different, and the results depend on your starting shade and lifestyle habits. If you drink coffee, soda, or tea often, your teeth may take longer to whiten to the desired shade.  

glo whitening brilliant 5

The GLO Lit Device is $50 cheaper than GLO Brilliant. Although less expensive, this kit is clinically proven to provide lasting whitening results without sensitivity. It also has wireless Bluetooth connectivity that connects to the GLO Whitening App.

Quick Overview

If you want to skip the detailed review, you can view and buy GLO’s products here:

How Does GLO Science Teeth Whitening Work?

GLO Brilliant and GLO Lit have slightly different application processes, but both use the same ingredients:

  • GLO Lip Care treatment (apply pre-application to prevent dryness and irritation on the lips/gums)
  • GLO Vial technology (contains the whitening serum and an easy-to-use brush applicator)
  • GLO Mouthpiece (with blue light LED, heat, and an automatic 8-minute timer)

How Does LED Teeth Whitening Work? Is It Safe?

LED teeth whitening is safe for at-home use. Current research shows that LED whitening is effective when users follow the manufacturer's protocols.

LED as a light source is a safer alternative to ultraviolet (UV) light, which can cause cell mutations. An LED light does not lead to the mutation of cells or raise the risk of cancer. LED speeds up the whitening reaction without the risks of UV light.

During the LED teeth whitening process, you’ll apply a bleaching agent to your teeth. The LED light activates the whitening agent and starts the chemical reaction. When this reaction occurs, the blue LED light penetrates the enamel and removes stains.

7 Reasons Why You Should Choose GLO

GLO stands out in the LED teeth whitening industry for a few reasons, including:

1. They Offer At-Home and Professional Teeth Whitening Kits

GLO offers both at-home and professional teeth whitening solutions. You can order a kit online for $149 to $200 and use it in the comfort of home. This whitening treatment does not require a prescription or dentist appointment. 

The company also sells GLO Science™ Professional teeth whitening kits to dental practices. These include in-office (chairside) kits, take-home kits, and more. This whitening treatment requires an appointment with a GLO dentist. 

2. They Won Two Edison Awards

The GLO Brilliant Teeth Whitening Device has received two prestigious Edison Awards in the “Consumer Packaged Goods” category. They won the silver medal in 2012 and the gold medal in 2013. 

The Edison Awards is an annual competition honoring excellence in new product development. The vision is guided by the legacy of Thomas Edison and his Menlo Park team who brought a remarkable number of innovations to the market.

3. They Have Patented Products

GLO uses patented G.L.O (Guided Light Optics) Technology, which is built into the mouthpiece. The technology allows the mouthpiece to gently warm up the whitening gel placed on your teeth. This speeds up the whitening process and brightens your teeth safely.

4. They are FDA-Approved 

Unlike many teeth whitening products on the market, GLO Science is FDA-approved. This means the agency has determined that the "benefits of the product outweigh the known risks for the intended use.”

5. The Serum Causes Zero Sensitivity

GLO does not cause sensitivity in the majority of customers. Even if you do experience sensitivity, it will likely be very mild and temporary. 

GLO’s unique gel formula is carbamide peroxide and alcohol-free, which are common causes of tooth sensitivity. The gel is also designed to stay on your teeth and off your gums and soft tissues. This reduces the risk of sensitivity even more. 

6. The Kits are Easy-To-Use 

The whitening gel is applied with easy-to-use GLO Vial technology. The whitening process does not require runny gels, trays, or strips. 

The G-Vials have a precision brush that allows you to target each tooth with ease (even your back teeth). The brushes also make it easy to stay away from your gums and soft tissues. 

7. The Gel is Non-Toxic, Vegan, and Gluten-Free

GLO's whitening gel is made with non-toxic ingredients to provide safe, effective, and cruelty-free whitening. It was formulated by a top aesthetic practicing dentist in New York.

GLO vs. Other LED Teeth Whitening Brands

GLOAuraGlowSnow
Best for Sensitive TeethBest Budget Whitening KitBest-Known Whitening Brand
Cost$199$59$149
Free U.S. Shipping
Whitening Time Per Day32 minutes30 minutes21 minutes
# of Treatments Included10 GLO Vials (40 applications)20 treatments for 20 days of whitening75 treatments
Enamel-Safe Ingredients
Heat Whitening Acceleration
Money-Back Guarantee
Hands-Free Mouthpiece
Minimal to No Sensitivity
Lip Treatment Included
Made in the USA
1 Year+ Warranty
FDA-Approved

Why Trust Us?

All medical content on this site, including this guide and other product reviews, is written by our team of experienced writers and researchers. 

All NewMouth writers vet products that are recommended and reviewed in the industry. 

In cases where this is not possible, our team will:

  • Compare positive and negative reviews on the products
  • Talk to company leaders to ensure their products are safe and effective
  • Look into costs to ensure customers are getting the best quality products at reasonable prices
  • Read research studies to compare the pros and cons of each product

Every piece of content is heavily reviewed before publication. All content on NewMouth is also medically reviewed by a licensed dentist, specifically any content where we recommend products. 

Our dentists are specifically instructed to flag any recommendations they don’t agree with. Any products that don’t meet their professional standards are removed.

GLO Science: Brilliant Collection Review

GLO Brilliant is an innovative and clinically proven teeth whitening device.

It combines blue LED light and professional elements of heat. This provides fast, visible results without pain or sensitivity.

glo whitening brilliant 1

What’s Included?

The Glo Brilliant Device includes:

  • Medical-grade LED mouthpiece with heat
  • Mouthpiece case
  • Travel and storage case
  • Blue light remote control 
  • Lanyard (to keep the device in place while multitasking)
  • Lip balm treatment (to apply pre-application)
  • 10 teeth whitening G-Vials (40 applications, which lasts 10 days)
  • Easy user manual with FAQs and detailed instructions 
  • Shade guide
  • Power adapter
  • Universal USB cable  

Cost: $199

GLO Brilliant Whitening Mouthpiece

The patented Glo Mouthpiece is the science behind the brand’s innovation. 

The mouthpiece combines a safe LED light and warming heat to activate and accelerate the brightening serum on your teeth.

It also has a closed system, preventing oxygen from escaping your teeth. This results in quicker and more effective whitening treatment. 

glo 8

The mouthpiece is a universal size. It whitens the top and bottom teeth at the same time. 

GLO Brilliant Whitening Gels (GLO Vials)

The patented GLO Vials are used exclusively with GLO teeth whitening systems. The serum contains a glue-like formula that stays in place during the whitening process. 

The unique precision brush targets each tooth individually. It also prevents the whitening gel from touching your gums. This helps minimize sensitivity and dryness. 

glo brilliant

Each GLO vial has enough serum for four applications (one full cycle of treatment). The GLO Brilliant kit includes 10 whitening G-Vials, which will last for 40 applications (10 full treatments). 

The whitening gel is vegan, latex/gluten/cruelty-free, and made in the USA. You can buy an extra set of GLO Brilliant Vials to keep your teeth white all year long. 

How to Use the Kit

To use the kit, follow these steps:

  1. Apply a thin layer of the GLO Lip Care to your top and bottom lips. If you have extra sensitive teeth, apply it on the inside of your lips and gum area.
  2. Brush on the whitening gel via the GLO Vial technology. You only need to apply a small bead of gel (1/2 pea-size amount) onto the brush tip applicator. 
  3. Brush a thin layer of the gel onto your top and bottom teeth (fronts only). 
  4. Put the mouthpiece in and press the GLO button on the remote control. This makes the device light up blue, which means it’s working.
  5. Relax your jaw. You do not need to bite down hard or resist swallowing. The gel will stick to your teeth, so you will not swallow any of it. 
  6. After eight minutes, the mouthpiece will blink and then turn off by itself.
  7. Remove the mouthpiece and reapply the whitening gel to your teeth. Then place the light back into your mouth for another eight minutes.
  8. Repeat this process four consecutive times each day for five days (or up to 10 days).
  9. After you’ve reached the desired whiteness, only monthly touch-ups are necessary.

Pros of GLO Brilliant

GLO Brilliant is a great way to whiten your teeth quickly, effectively, and painlessly. The serum is easy to apply and does not fall off of your teeth while in use. The mouthpiece is also relatively comfortable and does not move around while whitening.

The eight-minute timer and lanyard work well and allow you to multitask freely. The best part about GLO is that it causes minimal sensitivity (if any). The serum also doesn’t taste too strong and has a pleasant mint flavor. 

Cons of GLO Brilliant

As with any product, there are a few downsides to GLO Brilliant whitening treatment. 

For example, reapplying the gel every eight minutes can be messy. It is also essential to apply the GLO Lip Care treatment before each application to ensure the serum doesn’t harm your lips. 

While in use, the LED light can also dry out your lips slightly. 

How Much Does GLO Brilliant Cost?

GLO Brilliant costs $199 at full price. You can also select a payment plan through afterpay. This will include four interest-free installments of $49.75.

GLO Science: Lit Collection Review

GLO Lit is a clinically proven teeth whitening device with wireless Bluetooth connectivity. 

The device connects wirelessly to the GLO Whitening App. This allows you to schedule treatments, preview results, receive reminders, track progress, and more.

glo lit

Like the GLO Brilliant Device, GLO Lit also incorporates the specially formulated serum and blue LED light/heating mouthpiece.

For best results, complete three consecutive applications per day for seven days. Then use as needed for touch-ups. 

What’s Included?

The GLO Lit Device includes:

  • Medical-grade LED mouthpiece with heat
  • Mouthpiece case
  • Travel case
  • Bluetooth Power Pack
  • Hands-free lanyard and garment clip
  • 7 teeth whitening G-Vials (42 applications)
  • GLO Lip Care treatment
  • User manual and shade guide

How to Use the Kit

To use the kit, follow these steps:

  1. Apply a thin layer of the GLO Lip Care to your top and bottom lips. If you have extra sensitive teeth, apply it on the inside of your lips and gum area.
  2. Brush on the whitening gel via the GLO Vial technology. You only need to apply a small bead of gel (1/2 pea-size amount) onto the brush tip applicator. 
  3. Brush a thin layer of the gel onto your top and bottom teeth (fronts only). 
  4. Snap the G-Vial closed and save it for the next application.
  5. Put the mouthpiece in and start the process using the GLO Whitening App or by tapping the silver button on the Power Pack. 
  6. The mouthpiece will light up blue, which means it’s working.
  7. Relax your jaw. You do not need to bite down hard or resist swallowing. The gel will stick to your teeth, so you will not swallow any of it. 
  8. Since the device is wireless, you can multitask while whitening. 
  9. After eight minutes, the mouthpiece will turn off automatically.
  10. Apply three consecutive whitening applications every day for seven days (best results). After you’ve reached the desired whiteness, only monthly touch-ups are necessary.

Pros of GLO Lit

GLO Lit is a great way to whiten your teeth quickly, effectively, and painlessly. The serum is easy to apply and does not fall off of your teeth while in use. The mouthpiece is also relatively comfortable and does not move around while whitening.

GLO products also cause minimal sensitivity. The serum has a refreshing mint flavor and is not too strong. 

In addition to these benefits, the GLO Lit device is also interactive. You can track whitening progress via the GLO app. 

Cons of GLO Lit

Like GLO Brilliant, it is essential to apply the GLO Lip Care treatment before each application. This ensures your gums and lips are not harmed. While in use, the LED light can also dry out your lips slightly. 

How Much Does GLO Lit Cost?

GLO Lit costs $149 at full price. You can also select a payment plan through afterpay. This will include four interest-free installments of $37.25.

Our Feedback: Before You Buy

One of our writers at NewMouth tried out the GLO Brilliant Whitening Kit for six days in a row. GLO recommends whitening your teeth for five to seven days straight (or up to 10 days). You only have to complete one treatment a day.

It took about three uses for her to see changes in tooth color. And, after the last day, her teeth were about two to three shades lighter.

However, she stopped whitening her teeth after the sixth day. The results started to fade quickly, which is why it's essential to maintain upkeep. After the first full treatment, you should use GLO whitening products once per month, performing three back-to-back applications in one day.

Positive takeaways:

  1. The GLO mouthpiece is comfortable and the heat feature is a great addition. You can feel the gel warming up on your teeth, and it helps accelerate the whitening process.
  2. The product was packaged well and the case is perfect for storage and travel. The directions are also easy to follow.
  3. The whitening gel doesn't taste bad (like most whitening gels on the market). It also sticks to your teeth well while in use.
  4. The 8-minute timer and wireless lanyard are convenient. It is easy to know when your whitening session is done because it will blink a few times before turning off.
  5. The whitening gel did not make her teeth sensitive. However, this can vary from person to person.
  6. The product works with consistent use (make sure you read the directions). The whitening results were apparent after two to three uses.
  7. The GLO lip treatment helps keep your lips moist during the whitening process.

Negative takeaways:

  1. The GLO vials can be difficult to apply to your teeth without missing your gums. Thankfully, the gel did not irritate her gums in the process.
  2. It's difficult to use an entire GLO vial during one whitening session. They also expire quickly after being opened, so it's easy to waste some of the gel.
  3. The whitening process is more time-consuming (and messier) than most. It includes four 8-minute applications. However, the comfortability of the mouthpiece makes this process easier.
  4. If you don't apply the lip treatment after each session, they can dry out.

GLO Teeth Whitening

GLO Science™ is an award-winning, patented, and FDA-approved LED teeth whitening brand. They are the only at-home teeth whitening system that combines heat and blue LED light to give you faster results without sensitivity.

Rating by Alyssa Hill

glo whitening brilliant 2
Overall Value
Sensitivity
Ease of Use
Safety
Customer Service
Warranty

Summary

The GLO Brilliant Teeth Whitening Device is clinically proven to whiten up to five shades lighter in five days. The GLO Lit Device is cheaper than GLO Brilliant. Although less expensive, this kit is clinically proven to provide lasting whitening results without sensitivity. It also has wireless Bluetooth connectivity that connects to the GLO Whitening App.

4.6

Pros

  • FDA-approved 
  • Won two awards for effectiveness and innovation
  • Easy to use kit with clear directions
  • Comfortable LED mouthpiece
  • Warming technology to speed up the whitening process
  • Wireless whitening
  • 8-minute timer to keep tracking of whitening
  • Lip treatment provided
  • Minimal to no sensitivity 

Cons

  • More expensive than other brands
  • GLO whitening serum can be messy 

What People Are Saying About GLO

The NewMouth team compiled reviews from five websites where you can purchase GLO products. We found over 2,000 customer reviews in total. Most of the reviews are positive, while a small percentage of them are negative or somewhere in the middle. Almost 80 percent of GLO's reviews on Amazon are 4 stars or above.

Many of the positive reviews say the whitening products cause minimal to no sensitivity. They also say that the whitening results are quick and painless. GLO is on the more expensive end of at-home whitening kits, but many customer reviews mention that it is worth the price.

I have used Glo for several years. I had professional whitening done at my dentist's office and have maintained it after they switched to Glo. It causes zero sensitivity and excellent results!

- GLO reviewer

 love how it whitened my teeth, and how I could see results even after the first treatment! Most importantly, it did not cause any sensitivity which is a huge plus as other products gave me pain.

- Amazon reviewer

Even though a majority of GLO's reviews are positive across multiple sites, some people were not completely satisfied with the products.

However, keep in mind that people who have thin enamel or dental restorations cannot whiten their teeth. Some people are also more prone to sensitivity than others (and sensitivity is a common side effect of all teeth whitening, even professional treatment).

Neglecting to read the instructions carefully before use can also result in poor outcomes.

I do notice a difference and I've only used it twice. However, you have to do 8 minutes 4 times to complete 1 treatment. 

- Amazon reviewer

It stopped charging and working after day 7. My teeth are not as white as I had hoped they would be, but that may be due to my genetics. 

- Amazon reviewer

Where to Buy GLO Science Teeth Whitening Systems 

The best place to buy GLO Teeth Whitening products is directly from their website. This is because they often have promos and discounts. You cannot get these deals on Amazon. You can also purchase GLO products directly from your dental office.

GLO Science FAQs

What are the potential side effects of GLO?

While GLO’s whitening formula is designed to produce zero sensitivity, it can still cause mild sensitivity in certain people. The LED light and formula can also cause mild lip dryness. 

What are the ingredients in the GLO whitening gel (G-Vial)?

Ingredients include: distilled water, polyethylene glycol, hydrogen peroxide (6%), potassium nitrate, glycerin, edetate disodium, sodium saccharin, sodium fluoride, sodium hydroxide, and flavor.

Are there any add-on treatments for desensitizing? 

No. Since GLO’s unique gel formulation is alcohol and carbamide peroxide free, sensitivity risks are very low.

Should I brush my teeth before every whitening session?

Yes. You should brush your teeth with toothpaste for two minutes before using GLO.

Do I need to apply the GLO lip treatment before each application?

Yes, Dr. Levine (creator of GLO) recommends applying the lip treatment before each application. This keeps your lips moist and is a professional lip protectant. 

Can I use GLO with braces or dental restorations (fillings, crowns, etc.)?

GLO is completely safe to use on dental restorations, including bonded teeth, porcelain veneers, fillings, crowns, caps, bridges, implants, and similar.

Remember: whitening products will not bleach restorations, only untreated teeth. 

GLO whitening cannot be used with braces. Wait until you get them taken off before starting the treatment process. 

How white can my teeth get with GLO?

GLO has been clinically proven to whiten teeth five shades lighter in five days. However, results vary from person to person. 

What is the hydrogen peroxide percentage in the GLO whitening gel?

GLO whitening gel contains 6 percent hydrogen peroxide. 

Should I refrigerate GLO whitening gels?

GLO Vials can be stored at room temperature and do not require refrigeration.

Can I swallow with the gel on my teeth?

Swallow as you normally would while the GLO whitening gel is on your teeth and/or when the mouthpiece is in your mouth. The gel is formulated to stay on your teeth until it evaporates and dissolves.

Resources

“GLO Brilliant Collection.” GLO Science, gloscience.com/collections/glo-brilliant-collection.

“GLO Lit Collection.” GLO Science, gloscience.com/collections/glo-lit.

“Edison Awards™ - Honoring the Best in Innovation and Innovators.” Edison Awards™ - Honoring Innovations and Innovators, edisonawards.com/winners2014.php.

Hayward, Roche et al. “A clinical study of the effectiveness of a light emitting diode system on tooth bleaching.” The open dentistry journal vol. 6 (2012): 143-7. doi:10.2174/1874210601206010143 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3466022/.

Kalyana, P, et al. “Stain Removal Efficacy of a Novel Dentifrice Containing Papain and Bromelain Extracts – an in Vitro Study.” Wiley Online Library, John Wiley & Sons, Ltd, 1 July 2010, onlinelibrary.wiley.com/doi/abs/10.1111/j.1601-5037.2010.00473.x.

Neighmond, Patti. “Navigating The 'Aisle Of Confusion' To Whiten Your Teeth.” NPR, NPR, 14 Aug. 2017, www.npr.org/sections/health-shots/2017/08/14/542830158/navigating-the-aisle-of-confusion-to-whiten-your-teeth.

Neighmond, Patti. “Navigating The 'Aisle Of Confusion' To Whiten Your Teeth.” NPR, NPR, 14 Aug. 2017, www.npr.org/sections/health-shots/2017/08/14/542830158/navigating-the-aisle-of-confusion-to-whiten-your-teeth.

“Shop GLO Science Teeth Whitening, Accessories and More.” GLO Science, gloscience.com/pages/glo-buy.

newmouth logo
menu linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram