In this article
GLO’s Teeth Whitening Kit may be a worthwhile choice if you've struggled with sensitivity and are willing to invest more in a comfortable whitening solution that you can do at home.
GLO Brilliant can effectively whiten your teeth, although its results tend to be subtle. With a higher price than most brands, we recommend finding alternatives if you value faster results and significant teeth whitening.
At NewMouth, we understand that a busy lifestyle often means less time for self-care. If you're looking for an effective teeth-whitening solution, we're here to guide you. Discover the best kits that deliver a radiant smile, boost your confidence, and seamlessly fit your schedule.
I tested the GLO Brilliant Advanced Teeth Whitening Kit and looked at customer reviews on YouTube and Amazon. Here's an overview of its pros and cons based on my experience and what others are saying:
My teeth are like pearls now. It does its job as described. Do like it says... use the lip care... trust me.
Amazon Review
I have used this for 7 treatments now, and it seems to be working. The issue is that the unit won't keep a charge. It only lasts about 1-2 treatments.
Amazon Review
GLO’s Teeth Whitening Kit comes in a custom-designed case with separate compartments molded for each of its contents, including:
The product was packaged well, and the case is perfect for storage and travel. It even has a convenient handle so you can carry it around.
If you're committed to making eco-friendly choices, GLO aligns with your values. Its packaging is made of biodegradable materials, while the vials used for the teeth whitening gels are recyclable, vegan, and cruelty-free.1
I tried the GLO Advanced Brilliant Whitening Tech Kit for a week. Below is a more detailed breakdown of my experience with the brand, including:
I’m fond of coffee, so my teeth were slightly yellow before the treatment. It wasn’t until after 3 uses that I started seeing results. When I completed my treatment in 7 days, my smile was 2 shades lighter than when I started.
I expected better from GLO’s whitening system, considering the research behind it and how long each treatment lasts. However, after reviewing clinical studies, I realized my results are close to what others are experiencing.
Science-backed teeth whitening: Studies show that GLO’s at-home kit can lighten teeth by up to 4 to 5 shades in 10 to 30 days. Maybe if I continued using the kit, I would have gotten the dramatic results I was hoping for.2,3,4
For the best results, the company recommends the following usage:1
Despite the hydrogen peroxide in GLO’s whitening gel, I didn’t get the “zingers” (sensitive teeth) throughout my treatment. The gel also tasted good and didn’t leave a weird aftertaste at the end of each treatment.
The warmth from GLO’s mouthpiece did need getting used to at first. I’ve used LED accelerating devices before but they only emitted light, not heat. I became more accustomed to this warm feeling over time.
GLO’s mouthpiece doesn’t heat up to more than 52°C or 125.6°F. To give you some perspective on what that might feel like inside your mouth, it’s roughly the same temperature as a perfectly warm soup.5,6
For your safety: Don’t forget to apply GLO’s lip balm before wearing the mouthpiece. This will keep your lips from drying during the treatment.
Each treatment lasts about 30 minutes and requires three applications. So you have to be extremely committed to GLO’s teeth whitening process.1
It may seem tedious at first. But once you’re used to the steps, it gets easier, and you’ll find that it’s actually convenient.
Fitting GLO into your routine: You’ll need to be flexible with the treatment since it includes a mouthpiece and several applications of whitening gel.
Its mouthpiece isn’t bulky like other whitening kits we’ve tried. It slides on effortlessly and feels comfortable, even though it fully wraps my teeth.
The broad-tipped brush on the vials makes it easy to apply the whitening gel on my front teeth. Although it was difficult to reach my molars at the back.
I would usually use GLO’s whitening kit before bedtime or between chores. The controller has a lanyard so you can conveniently wear it around your neck while the mouthpiece is plugged in and inside your mouth.
It helped me do other things—like laundry and vacuuming—during my treatment. Since the control doubles as a timer, I knew when to remove the mouthpiece and reapply the gel for another session.
This is where it gets messy and slightly uncomfortable. You have to reapply the gel three times in a row at 8-minute intervals. I didn’t mind too much since I needed to brush my teeth after completing the treatment.
My advice: Make sure you fully charge the GLO Control if you want uninterrupted treatments. I found that charging it overnight before bedtime and unplugging it in the morning was the most convenient.
The GLO Brilliant Kit starts at $31.80 per treatment, but this includes the mouthpiece and other accessories. Ongoing refills of GLO’s Whitening Gel bring these prices down to $5.50 to $6.50 per treatment.
Most at-home teeth whitening kits cost $2 to $2.50 per treatment while professional whitening costs $400 to $1,500. However, they usually contain higher concentrations of peroxide and cause sensitivity.
Bottom line: GLO offers good value if you want a gentler peroxide-based alternative with less likelihood for sensitive teeth. But if you want more treatments for a lower price, other at-home kits might be a better fit.
I avoided my usual cup of espresso for several hours after each treatment, although I continued to drink coffee for the rest of the day. My results lasted for about a month before reverting by 1 shade.
GLO says you won’t need treatment for another 6 to 12 months if you brush and floss regularly. But my results faded quickly, so it probably depends on your teeth and the foods you eat.1
For long-lasting results: I suggest observing your teeth and repeating the treatment as you deem fit. In my case, doing it once a month after my initial 7-day treatment helped me maintain my results.
If you're a religious coffee or tea drinker, then you may want to do it more often than, say, somebody who doesn't do that stuff. You can do a touch-up or whole five-day cycle every couple of months to reach your optimal tooth color.
YouTube Review
In-office teeth whitening treatments are effective but often involve harsh conditions—higher peroxide levels, intense lights, hotter temperatures, and longer treatment times—which increase your risk for sensitivity.7,8,9,10,11
GLO’s whitening kit offers a gentler yet effective alternative for at-home use. It uses Guided Light Optics and other science-based innovations.5,13
You can read the full white paper here to check the research and impressive before-and-after photos of people who used the treatment.
Here’s a breakdown of the science behind GLO:
I looked at clinical studies comparing GLO with Crest 3D Whitestrips Advanced Vivid and Zoom Professional Whitening. I also checked their pricing to see how they hold up against each other.5
| GLO Brilliant Advanced | Crest 3D Whitestrips Advanced Vivid | Zoom Professional Whitening | |
| Type of Treatment | At-Home Teeth Whitening Kit | At-Home Teeth Whitening Strips | In-Office Teeth Whitening |
| Cost Per Treatment | $31.80 initially then $5.50 to $6.50 per treatment with refills | $2.50 per treatment | $300 to $1000 |
| Number of Treatments | 5 | 12 | 1 |
To sum it up: GLO is a cost-effective solution for at-home teeth whitening. It provides the same results as Zoom without pain and whitens teeth better than Crest after 3 to 10 days of treatment.3,4,5
The GLO Brilliant Advanced Whitening Treatment is well-reviewed on Amazon, where it received 3.5⭐ from 60+ customers who tried it.
So I've used three of these so far to get my teeth where I want it to be, and I also applied this product just to this one tooth a couple of times, because I wanted to lighten just that tooth. I didn't notice any sensitivity in my teeth, which is really exciting. The con is that it's expensive. But I don't have tooth sensitivity. I feel like it's done a really good job whitening my little rogue tooth there, and then my other teeth look a lot whiter.
YouTube Review
Many users found it to be both effective and gentle in brightening their smile. People with sensitive teeth reported minimal discomfort.
Unfortunately, GLO users often struggle with the device's battery life and long charging times. The overall price of the kit was also a concern. For some, their results didn't justify the high cost and need for ongoing refills.
You can buy GLO’s Teeth Whitening Tech Kit online for these prices:
For the best prices: I suggest purchasing from GLO’s website. The company frequently offers promos and a 15% discount for subscribers.
I got my kit for $129 instead of $159 and bought an extra set of GLO Whitening Gel Vials for $65.
The GLO Brilliant Kit lives up to its promise of gentle teeth whitening, making it a great option for people who prioritize comfort over dramatic results. Its effects are noticeable but subtle—perfect for those who want a brighter smile without harsh chemicals or risking increased sensitivity.
While GLO's higher price and the need for frequent gel reapplications might be a turn-off for some, the focus on gentleness makes it a worthwhile investment for those who struggle with sensitive teeth. If you want to brighten your smile comfortably at home, it’s worth considering.
However, there are other options besides GLO that may work better for you:
For faster teeth whitening: Snow may be the right choice. It can whiten teeth in 3 days, although it causes sensitivity in some people.
In this article
17 min read
8 min read
13 min read
10 min read
14 min read
12 min read