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GLO Science Teeth Whitening Review 2023

At-home teeth whitening brand suitable for sensitive teeth

Julie Panting

In a Nutshell

GLO is an easy-to-use at-home teeth whitening treatment. Its innovative technology combines blue LED light and heat to amplify whitening inside a mouthpiece, protecting the gums and other soft tissue. Ideal for sensitive teeth, each Glo treatment lasts for eight minutes and produces noticeably whiter teeth with each session, but retouching is required once a month. The GLO product range includes teeth whitening devices and whitening pens.


  • Fast, easy at-home treatments
  • Causes no sensitivity
  • Vegan-friendly, safe, cruelty-free products


  • Using the mouthpiece device with braces is not recommended
  • Requires retouching once a month

GLO Science GLO Science Visit Site

GLO at a Glance 

Best For: A vegan-friendly way to achieve a brighter, more confident smile.

Starting Price: Prices start from $149 (single payment) or $37.25 per month.

Treatment Duration: Eight minutes per session, three times a day for 5-7 days.  

Estimated Length of Results: Results last for around six months. 

LED Technology: Yes

Money-Back Guarantee: Yes 

What is GLO Science?

GLO Science is an award-winning, patented LED teeth whitening brand. It was created in 2011 by Dr. Jonathan B Levine, a renowned dentist and oral health expert. Based in New York City, the company offers three different at-home whitening kits and sells other oral care products and professional teeth whitening kits for dentists.

GLO Whitening Kits:

Original GLO Brilliant is the brand’s signature teeth whitening device. It’s clinically proven to whiten teeth by up to five shades in five days, and offers longer-term whitening stability.

GLO Brilliant White Smile brightens teeth up to 12 shades using illuminating heat technology to whiten teeth 25% faster. 

GLO Lit also whitens teeth by five shades lighter, but without any sensitivity. With fast-charge capability, optional Bluetooth connectivity, and two ways to go hands-free, it enables you to whiten anytime, anywhere. 

GLO stands apart from its competitors for many reasons:

  • It utilizes a patented technology – Guided Light Optics – built into the mouthpiece, to accelerate the whitening process.

  • It’s FDA-approved.

  • The company donates 10% of its proceeds to charity.  

  • All products are gluten-free, vegan-friendly, cruelty-free, and made in the USA.

How Much Does GLO Cost?

You can purchase a complete kit starting at $149. Subsequently, you only need to buy packs of the whitening gel for subsequent treatments. Prices range from $7.99 to $199 and include free standard shipping, or you can upgrade at an additional cost.  

GLO Science Products


GLO Brilliant White Smile – Teeth Whitening Device with Illuminating Heat Technology


Original GLO Brilliant Teeth Whitening Device  


GLO Lit Teeth Whitening Device Tech Kit with Bluetooth


GLO-to-Go Teeth Whitening Pen 


Mint Teeth Whitening GLO Vials 


Teeth Whitening GLO Vials (5 Pack) – Cinnamint flavor 


Twice Toothpaste 


Eco Balance Deep Clean & Gum Restoration Oral Health Booster 


GLO Science accepts credit cards, debit cards, Amazon Pay, Apple Pay, or PayPal payment. Alternatively, you can spread the cost with Afterpay. Purchases can be split into four interest-free payments, payable every two weeks. 

While GLO is one of the more expensive home whitening kits, most reviewers believe the price is worth it.

GLO Science: Original GLO Brilliant Whitening Device Review

The Original GLO Brilliant Whitening Device claims to whiten teeth up to five shades in five days. In this review, we look at what’s included in the kit, the ingredients, how it works, how you use it, and more importantly whether it’s safe and effective. 

So, what’s in the kit?

  • GLO Brilliant Heat & LED Whitening Mouthpiece

  • Mouthpiece storage case

  • Rechargeable GLO Control with extended battery life and hands-free lanyard

  • 10 Teeth Whitening Gel Glo Vials (10x 2.95ml – 60 applications)

  • GLO Lip Care (8ml)

  • GLO Universal power cord and USB adapter

  • Zippered travel storage case

  • Shade guide and user manual

What Are the Ingredients?

TEETH WHITENING GLO VIAL INGREDIENTS: Distilled Water, Polyethylene Glycol, Hydrogen Peroxide (6%), Potassium Nitrate, Glycerin, Edetate Disodium, Sodium Saccharin, Sodium Fluoride, Sodium Hydroxide, Flavor.
GLO LIP CARE INGREDIENTS: Ricinus Communis (Castor) Seed Oil, Beeswax, Mentha Piperita (Peppermint) Leaf, Stearalkonium Hectorite, Butyrospermum Parkii (Shea) Butter, Vanilla Planifolia Fruit Extract, Menthol, Alcohol, Aloe Barbadensis Leaf Juice, Copernicia Cerifera (Carnauba) Wax, Tocopherol, Ammonium Glycyrrhizate, Ubiquinone. *Organic   

How Does GLO Brilliant work?  

The science behind the brand’s innovation is the patented GLO mouthpiece. This incorporates a safe LED light and gentle heat that warms the specially formulated whitening gel, activating and accelerating the whitening process for speedy results. 

The patented GLO gel is thick and glue-like, helping it remain in place throughout the whitening process. A precision brush helps prevent the serum from touching the gums, minimizing sensitivity and dryness. 

GLO Science takes pride in its teeth whitening and oral care technologies and formulas based on Jonathan B Levine’s decades of experience in clinical dentistry.

Among many clinical studies, one compared GLO Science with Crest 3D Whitestrips Advanced Vivid to evaluate their safety on tooth enamel and the level of whiteness achieved. GLO came out ahead, with no sensitivity and superior whitening.

How to Use the GLO Whitening Kit   

To whiten your teeth with GLO's kit, follow these steps: 

  1. Apply a thin layer of GLO Lip Care to the inside and outside of your lips. If you’re extra-sensitive, apply it to the gums too.

  2. Squeeze a pea-sized amount of gel from the vial onto the applicator tip.

  3. Brush a thin layer of the gel onto the front of your top and bottom teeth.

  4. Place the mouthpiece inside your mouth and press the GLO button on the remote control. It will light up blue to show it’s working.

  5. There’s no need to bite down hard. Just relax your jaw and try to swallow as normal. The thick glue-like gel will remain in place. 

  6. After eight minutes, the mouthpiece blinks and turns off automatically. 

  7. For best results, remove the mouthpiece, reapply the gel and do it over again for a total of four back-to-back sessions.  

  8. Do this every day for five days, or until you’re happy with the results (up to 10 consecutive days). 

  9. To maintain your whiteness, retouch once a month.

Is GLO Brilliant safe?

GLO Science whitening systems are the only at-home devices designed by a dentist that use the ideal combination of heat, light, and hydrogen peroxide to whiten your teeth safely, quickly, and effectively. The devices warm up the mouthpiece to an optimum temperature, speeding up whitening without damaging tooth enamel. The built-in timer helps ensure a safe application every time. 

Does GLO Actually Work? 

Most comments were positive based on customer feedback found on sites like Amazon and Trustpilot. Reviewers said the whitening devices were easy to use, had impressive results, and no sensitivity was experienced in most cases. 

How long does it take to see results?

It requires a complete treatment (four consecutive eight-minute sessions) to achieve up to five shades whiter. Naturally, this depends on the color of your teeth when you begin the process.

How long do the results last?

GLO teeth whitening lasts between four and six months. The color gradually fades once you stop using the whitening gel, so retouching once a month is recommended. 

Money-back guarantee

GLO Science offers a 100% money-back guarantee on any product purchased from the company. If for whatever reason you’re not satisfied with your product, you can request a refund within 30 days of purchase, and the company will also cover your return shipping.  

How Does Original GLO Brilliant Teeth Whitening Compare to Other Whitening Kits?

GLO Science




Starting Price





Treatment Type

Gel/LED light combination with mouthpiece

Gel/LED light combination with mouthpiece

Gel/LED light combination with mouthpiece

PAP + LED teeth whitening kit

Treatment Duration

Four eight-minute sessions per day for 5-7 days

30 minutes per day for 7-14 days

9 minutes per day for 21 days 

10 minutes a day for six days 


Around six months

1-3 months

1-3 months

Up to three months

Money-back Guarantee





GLO vs. Auraglow

Both treatments are sensitivity-free. GLO costs considerably more than Auraglow, $199 rather than $80. The main difference is that GLO uses gentle heat and light to activate the hydrogen peroxide, while Auraglow uses carbamide peroxide and light only. Treatment takes around the same time, but GLO produces significantly faster results – 5-7 days compared to 7-14 days.

GLO vs. Snow

Both treatments have a similar price point. However, while treatment time with GLO takes 32 minutes compared to Snow’s nine minutes, GLO achieves results in 5-7 days instead of 21 days with Snow.

GLO vs. Hismile 

GLO uses hydrogen peroxide to get results, while Hismile’s at-home whitening kit is peroxide-free. Hismile’s kit contains Phthalimidoperoxycaproic acid (PAP) as its primary whitening agent, to reduce sensitivity.  

Other GLO Science Products

GLO-to-Go Teeth Whitening Pen

Convenient mess-free teeth whitening on the go

Starting price: $25 for one 2.8ml whitening pen with a silicone tip.

Treatment duration: Use any time to rejuvenate dull-looking teeth.

Results: Proven transformative results, not just a touch-up!

The GLO-to-Go Teeth Whitening Pen can be used to brighten dull teeth and touch up whiteness. The mess-free pen design makes it an ideal product to carry around in your pocket, and fits around the busiest schedule. It’s powerful, portable, and safe for crowns, bridges, and veneers. 

The pen features hygienic, soft silicone bristles angled to ensure a quick and even application. Simply brush it on and smile for 30 seconds while it whitens and dries. After use, it’s best to wait for 30 minutes before eating or drinking. With no rinsing needed, it’s ideal for whitening on the go. 


  • Portable and convenient 

  • Sensitivity-free 

  • Recyclable packaging


  • Hard to judge how much gel has reached the tip

  • The tip easily clogs

Is the GLO Teeth Whitening Kit Worth It?

GLO Brilliant is the only at-home whitening brand that uses heat to speed up the process. Teeth can be whitened by up to five shades lighter in 5-7 days, though results vary depending on the starting color of your teeth. 

On the downside, removing the mouthpiece and reapplying the whitening gel four times for a complete treatment can be messy. 

While the price tag is high, the results are promising. Consequently, most reviewers felt it was worth the money to use an effective, safe, and FDA-approved product. 

Frequently Asked Questions
How long does GLO teeth whitening last?+-

GLO teeth whitening typically lasts 4-6 months, but this varies depending on food and drink choices and whether you smoke.

Is GLO safe?+-

Yes, GLO is safe, with LED being a safer alternative to UV light.

What are the potential side effects of GLO?+-

There could be tooth sensitivity, but this is usually mild and soon disappears.

Should I brush my teeth before every whitening session?+-

It’s always recommended to brush your teeth before whitening, which will help the serum adhere.

Is it OK to use GLO with braces or dental restorations?+-

GLO is not recommended to use with braces, but you can use it with aligners. It’s also safe to use with crowns, bridges, and veneers but will not change their color.

Julie has been writing dental-related content for over 12 years. She is the co-founder of Dental Writers, a team of dental professionals and writing specialists dedicated to creating informative and engaging content to help those seeking information about oral health. Julie has written over 3000 articles, blog posts and treatment/service pages for dentists and dental businesses across the UK, US and Australia.

The author of this article has been paid by Natural Intelligence to write this article. Neither the author nor Natural Intelligence provide medical advice, diagnosis, or treatment. If you think you may have a medical emergency, call your doctor or your local emergency number immediately.

GLO Science customer reviews

Based on 18 reviews

Ease of use

Brand satisfaction

Value for money

Service quality

Top Reviews

Ease of use

Brand satisfaction

Value for money

Service quality

9 months ago

Glo Science worked great for me and definitely helped whiten my teeth. My teeth are now several shades whiter. I thought it was a great value.

10 months ago

I love the product, great packaging. It is easy to use. I love the results, overall really loved it.

a year ago

They help improve your teeth by making them clean and white again. Glo Science left me with a much better smile, and it was very affordable. Keep up the good work.

a year ago

I appreciate the company's high values and the fact they stand by their products. The product does a great job whitening teeth.

a year ago

Glo Science is a great teeth whitening product. It is revolutionary at making your teeth white, and it doesn't cause any enamel erosion. It was highly recommended by my family and friends.

a year ago

They provided great customer service and answered all of my questions. They personalized my experience and made sure I was comfortable during the entire process.

9 months ago

It was very easy and convenient to use. It worked well with no sensitivity or bad taste, and I had good results. The trays were comfortable to wear. The only thing that I would say could be better is for their whitening powder to be a little stronger, but not enough to cause tooth sensitivity.

9 months ago

This brand of whitener does not make it feel like it's glued on to your teeth. They are simple and effective to use. The only problem I have experienced is the strong smell of the chemicals.

9 months ago

It works fine. It's not the best product I've used for teeth whitening, but it's still pretty decent for the price.

9 months ago

It didn't leave my teeth or gums with sensitivity issues, and it did whiten my teeth better than whitening strips. They do need to improve the taste of the lip treatment.

9 months ago

I felt it was easy to use, and my teeth looked whiter within two weeks of using it. Plus, I like that I can use it at home. I saw better results than other brands I used in the past.

10 months ago

It is very simple to use, and it works very well, but the price is way too high and should definitely be lower.

a year ago

Glo Science helps my teeth get whiter, and it's fast and easy to use. It's pretty inexpensive and the product is easy to apply on my teeth.

a year ago

Over all it is good, but it would be better if it didn't take so long to get the whitening level you prefer. They should offer a slightly stronger version for quicker results.

9 months ago

They should put in a little bit more of the whitening agent for better and faster results, and provide better directions on how long to leave it on your teeth.

9 months ago

The results weren't as I had hoped. For the price I paid, it should have been a better outcome. I wouldn't use it again.

10 months ago

I used this product for 2 months and could not see any vast improvement in the whiteness of my teeth. When I contacted the company and told them my review, they sent me a higher strength bleaching product, but this product is not available for consumer purchase. It is for professional use by dentists. The problem with Glo is that the bleach is not strong enough in their initial product.

10 months ago

Teeth whitening is terrible. It has never worked for me and I hate that slimy stuff. Glo Science never made my teeth as white as I had expected.

18 reviews
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