Best Teeth Whitening Gel (2021) – Definitive Guide and Reviews

best teeth whitening gel reviews

Imagine making your teeth ultra-white again without necessarily visiting your dentist? I know it sounds unbelievable. Yet, it’s what everyone is doing today, thanks to the best teeth whitening gel.

The whitening gel’s popularity rises far and beyond. Everyone raves about it. The method lets you whiten your teeth quickly and without spending a lot of money. It’s a highly recommend method by dentists all over. It’s also a safe method that you can conduct at the comfort of your home without the assistance of the dentist.


The real issue arises when using these gels occurs when you don’t know how to pick the best. This is important in a market filled with gels of all kinds.

But our goal is to help you whiten your teeth without any difficulties. We’ve therefore done everything for you:

Whitening Gel  Our Rating Price
Opalescence Teeth Whitening Gel
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Smartsmile Professional Teeth Whitening Kit
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Watts Power Teeth Whitening Gel
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We’ve entered the market and researched the best whitening gels for you. These are the real products that help you get great results. They do so by penetrating your teeth surface and remove all the stains present.

You’ll love how they work!

Before we introduce our list of the best products, let’s first inform you on what you should consider when buying a teeth whitening gel….

Things to Consider When Buying The Best Teeth Whitening Gel


Before you decide to buy any gel, you first need to move around and look for a few other good gels. This will give you a variety of products to choose from. You’ll have an easy time comparing their features. You’ll get to compare these features with their prices. In the end, you’ll pick the right product for your money.

Does the Gel Work?

The last thing you’d want to buy is a gel that does not white your teeth. Nobody would go for it either. It would simply be a waste of your valuable time and money. To avoid this, always ensure that the product you’re planning to buy gives actual results.

Finding information on whether a product works is very easy. You have your colleagues or family members who might have used the products before. They’ll give you firsthand information on the effectiveness of the product you intend to buy.

Additionally, customer reviews about certain products act a good source of firsthand information. It lets you know the good and the bad of every product. (i.e. Best whitening toothpaste)


You can’t afford to invest in a brand that’s known for producing poor quality gels. So, if you’re unsure about any brand, do a careful research about them before buying their product. This is the only sure way to know whether the manufacturer produces high-quality gels or not.

The information you get also help you understand the past relationship between the brand and its customers. This further points out to the quality of their products.

Ease of Use

Remember you’re using the whitening gel at you home and on your own. As such, you should go for a product that is easy use. One that you won’t need the help of your dentist on how to apply. The market has many such products, and a careful search will lead you to them

Length of Time To Apply

For how long does the manufacturer advise you to attach the whitening gel tray on your teeth?The shorter the period, the more efficient the product might turn out to be. The exact opposite is also true. If the manufacturer advises you to attach the gel for a longer time, it means that noticeable results won’t come quickly.

Active Ingredient

Every whitening gel has an active ingredient responsible for penetrating your teeth surface, removing stains, and making your teeth look brighter. If you want to get the most effective whitening gel, always check the active ingredient used and its percentage composition. The best gels are ones that use carbamide peroxide as the whitening agent, with a safe concentration of below 30%.

Now, we move on to our BEST teeth whitening gels that are ruling the market right now…

Our Top 5 Best Teeth Whitening Gel Picks:

1. Opalescence Teeth Whitening Gel Mint Review:

Opalescence Teeth Whitening Gel is one of the best teeth whitening gel for trays today. It comes with GreenDot teeth trays that make it a complete teeth whitening At Home kit. You can mold these plates to fit your dental correctly. If you leave in areas where dental trays are unavailable or expensive, this gel acts as a real deal for you.

The gel uses Carbamide peroxide as the active ingredient. As you know, Carbamide peroxide works perfectly to remove all the stains from your entire teeth surfaces. The final result is whiter teeth than ever before.

An easy syringe delivery is also part of this kit. It makes the gel completely easy for you to apply. A list of clearly outlined instructions accompanies the package to help you get started.

Unlike the low-quality gels out there, Opalescence Teeth Whitening Gel is at the top of the game. It has water composition of 20%. This prevents dehydration from taking place in your mouth. It also has a sticky, viscous formula that holds the gel and tray in place throughout.

Another interesting thing about this whitening gel is that it contains potassium nitrate and fluoride (PF) that advocates for your teeth sensitivity.

Highlighted Features:

  • Comes with GreeenDot Teeth Trays that makes it a complete At-Home teeth whitening kit
  • Comes with 1.2ml syringe, each with a dispensing tip
  • Well-laid out instructions on how to use the gel and the trays
  • Has a shelf life spanning to over 18 months
  • Contains a formulation of carbamide peroxide, Potassium nitrate, and fluoride that reduces your teeth sensitivity

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2. Smartsmile Professional Teeth Whitening Kit Review:

As its name suggests, Smartsmile Teeth Whitening Kit is a professional-grade teeth whitening kit. The gel gives you a chance to make your teeth whiter (and your smile brighter). It presents you with a high-quality, fast and efficient teeth whitening kit. Such a kit allows you to enjoy the benefits similar to those of a professional dentist teeth whitening session.

But unlike the dentist treatment, this kit requires you to spend less money and time too.

The kit comes with the whitening gel, mouth trays, and an applicator syringe. All these items are easy to use at home. All you have to do is apply the gel to the trays and fix it on your teeth for around 5-15 minutes. Repeat this process daily to get the most out of the kit.

Similar to the above product, this kit uses carbamide peroxide as the active ingredient. This promises you faster teeth whitening results.

Highlighted Features:

  • Uses the professional dentist teeth whitening gel
  • Package contains a whitening gel, applicator syringes, and the top and bottom mouth trays
  • The mouth trays are thermoform. That is, you can easily mold them by dipping them into warm water to fit different mouth sizes
  • Easy to use gel: just apply the gel on the trays and insert them on your teeth for 5-15 minutes daily
  • Contains 35% carbamide peroxide which accelerates the whitening process
  • Instant results. Starts whitening your teeth on the fist treatment which intensifies after a few days

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3. Watts Power 35% Dual Action Teeth Whitening Gels Review:

If you have yellow, dull, or stained teeth, you can easily transform them into the whitest teeth today. Yes! Watts Power 35% Dual Action Teeth Whitening Gels makes this possible and easy. The gel utilizes a dual action formulation that works all over your teeth surface and deep inside to remove all the stains present.

Note that this gel is thickened to help it adhere more excellently to your teeth.

With this gel, you’ll notice a difference in your teeth immediately after the first application. The gel also employs Carbamide peroxide as its core/active ingredient. No additives and fillers used. This guarantees you a swift teeth whitening performance. Each application lasts for 30 or fewer minutes.

Highlighted Features:

  • Employs an optimized 35% formula which is way more safe than the 44%
  • Enjoy 5-10 shades whiter in 20 days or less-the package contains Huge 10ml Gels which adhere better to your teeth compared to the smaller models
  • Gives your teeth a noticeable different after only one application
  • Formulated to be stored in the fridge for 2 ½ years. It’s, therefore, perfect for year round touch-ups
  • 4 HUGE 10cc syringes full of the whitening gel included

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4. Zoom Nite White 22% Teeth Whitening Gel Review:

NiteWhite 22% is also among the most popular teeth whitening gels that you can conveniently use at home and get amazing results in no time. Disucss Dental proudly owns this product. This is the same brand behind the one-hour teeth whitening system – the Venerated Zoom! This assures you that their products are high class and gives actual results.

NiteWhite is a clinical-grade whitening gel that comprises 22% carbamide peroxide. Compared to other at-home teeth whitening gels, 22% is a safe medium-strength formulation that favors people with sensitive mouths.

Applying this gel on your teeth is fun and easy. The package has three 2.4ml syringes, three application tips, and a 22%-strength gel. The syringes are double barreled. Each barrel holds a particular bleaching agent. With the help of the unique application tips, apply these ingredients to your mouth tray to activate them. Fix the tray to your teeth. Within an hour, you’ll have gotten whiter teeth!

Highlighted Features:

  • A 3pack of 2.4mL syringes, each holding a particular tooth whitening agent
  • Clinical-grade teeth whitening gel with 22% carbamide peroxide
  • Suitable for people with sensitive teeth
  • Remineralizes your teeth and reduces fade back
  • Approved by ADA
  • Has a strong working formulation of amorphous calcium phosphate (ACP), potassium nitrate and fluoride (PF) that gives you excellent whitening results
  • Have approximately 12 months shelf life

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5. Ultra White Teeth 22% Whitening Gel Review:

Ultra White Teeth 22% Whitening Gel is the last item in our list of the best teeth whitening gels. And true to its name, it gives you ultra-white teeth that boost your self-esteem and improves your social life. The gel gives you the same whitening treatment you’ll receive from your dentists but at a lower cost.

The performance of this teeth whitening gel is high above all its competitors. There are several facts to support this…

One of them is that their gel isn’t “food-grade.” Food grade gels are cheap, unstable and degrade as fast as they can. These gels are pharmaceutical grade. They don’t degrade quickly and can be used again and again without losing their form.

Another reason is that the gel uses a powerful formulation to help you get whiter teeth quickly. This formulation has the carbamide peroxide as the main ingredient. The compound composition is below 30%. This means that the gel completely safe for your oral health.

Note: You’re allowed to choose between 16% and 22% carbamide peroxide formulas. Which one do you prefer?

Highlighted Features:

  • Premium teeth whitener that costs you three times lower than the dentist charges
  • Give you noticeable results in a few days
  • Contains an active and efficient formulation of 22% carbamide peroxide
  • The 22% carbamide peroxide is safe for your oral health and does not burn or damage your gums, unlike the stronger (over 30%) gels
  • Prescribed by top cosmetic dentists across the world
  • Can be used with teeth whitening or the Invisalign trays
  • Made using the USA professional grade gel to give you professional teeth whitening results
  • Employs enamel-safe teeth whitening ingredients
  • Similar to those utilized by the dentists

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How Teeth Whitening Gel Differs from Other Teeth Whitening Methods?

There exist some similarities between whitening gels and other teeth whitening methods. The primary similarity is that almost all of them use the same whitening agents- the Carbamide peroxide.

But there also exists several differences between the whitening gels and other teeth whitening methods.

Below are some ways in which the whitening gels are different from all the other teeth whitening methods…

  1. ​The whitening gels are usually used alongside a mold/whitening tray. You can easily customize this tray to fit your teeth well.
  2. Some gels are designed for wearing overnight. Others are meant for use for a few hours daily.
  3. When you have the whitening gel on, you cannot eat or drink.
  4. The best whitening gels give you fast results- right after the first application.
  5. The gel tray’s layout allows you to treat other sides of the teeth, even the hard to reach areas. This is unlike most teeth whitening methods that concentrate on the front teeth only.

Final Verdict

Now you have the ultimate list of the best teeth whitening gels available today. These gels are very efficient and give you fast results. They’re completely safe for your dentals.

They give you professional grade teeth whitening treatment similar to that of your dentist but at very affordable prices. Best of all, they’re at home whitening kits.

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