Teeth whitening kit: review and comparison 2022

Updated: August 23, 2022

What a joy to have a star smile and whiter teeth! But be careful not to take any risks, because your teeth are unique and there is no question of damaging their surface and making them more fragile. Choosing a teeth whitening kit is not a random decision.

Nutrident.fr presents everything you need to know about whitening methods and the right tooth whitening kit product to choose.

Dental whitening favorite – Smile Avenue

smile avenue

“Professional home tooth whitening kit

“Make your smile shine in 20 to 30 minutes

“Easy to use, safe method, respect of the rules in force

Why do our teeth lose their brightness?

Our permanent teeth that grow during childhood have a natural shade of white that depends on the genes you inherit. Whatever that color is, with age it will fade, yellow or turn gray.

We are not talking about decayed teeth that need to be treated or devitalized teeth that become gray, but healthy teeth that lose their luster over time. Tartar and eating habits are the main causes of this phenomenon.

It is important to brush your teeth after every meal to get rid of the plaque formed by your saliva, the tartar it naturally contains and food debris. If you don't remove it immediately, it will solidify and turn into tartar, which settles on your teeth. Only scaling at the dentist can get rid of this yellowing tartar.

For dietary behaviors, beverages such as tea, coffee or wine, certain foods and smoking are responsible for staining the teeth. Kits are a good idea, especially for fighting yellow teeth.

Some medications, especially some antibiotics, have a bad influence on the color of teeth. Finally, aging is the inevitable cause of yellowing teeth.

To remedy this, there are now home tooth whitening kits that allow you to have whiter and brighter teeth after a few weeks.

Comparison and reviews of the best teeth whitening kits in 2022

Here are the three teeth whitening products we tested for you. In all three cases, you should always brush your teeth well before applying your mouthpiece. Don't put too much gel in the tray, otherwise it will “overflow” on your gums and you will waste material for nothing.

Our opinion on Atelier du Sourire

Workshop on Smile

Made in the USA, the teeth whitening kit from Atelier sur Sourire is also very complete. The particularity of the Atelier du Sourire kit is that its gutters are thermo-moldable. This means that for the first use, you will immerse them in hot water for five seconds. This makes the plastic malleable, and when you place the mouthpiece in your mouth and clench your teeth loosely, it will conform to the shape of your jaw.

The kit contains:

  • 3 syringes of 10 ml of teeth whitening gel;
  • 1 syringe of 3 ml of remineralizing gel;
  • 1 dental LED light;
  • 1 dental tray;
  • 1 anti stain spray;
  • 1 color chart;
  • 1 transparent storage case;
  • 1 complete user manual in French.

Once you have brushed your teeth with your usual toothpaste, you will repeat the operation with the disinfectant spray that will prepare your teeth.

Apply the tray with the gel for 15 to 30 minutes every day for 15 days.

For us, this is the best and most complete professional teeth whitening kit in this price range. For a more premium product, read our review of the smile avenue product below.

Our opinion on Smile Avenue

smile avenue

“Professional home tooth whitening kit

“Make your smile shine in 20 to 30 minutes

“Simple to use,

“Safe method, respect of the rules in force

Smile Avenue is a very effective whitening kit. Made in the United States, you can be sure that it meets European standards, especially for hydrogen peroxide dosage. So there is no risk to your teeth. You can trust the American controls, which are very strict when it comes to health standards.

The kit is complete and ready to use. It contains:

  • 3 syringes of 10 ml of whitening gel;
  • 1 pre-treatment cleaning spray;
  • 1 universal gutter;
  • 1 LED lamp to accelerate the effect of the gel;
  • 1 color chart.

The three syringes allow more than fifteen applications.

Once the gel has been applied, apply the gutter, after having clipped on the UV lamp. Leave on for thirty minutes. Remove the tray and brush your teeth to remove any gel particles that have remained on your teeth.

Smile Avenue's gel is very effective and you can see the effects within the first week. Its price is accessible.

Please note that Smile Avenue practices the “satisfied or refunded”, within a period of thirty days to claim your full refund.

To go further, we have written a review of the Smile Avenue kit.

Our opinion on White Care Box

White Care Box

White Care Box is an even more complete kit than Smile Avenue's. It contains:

  • 1 universal gutter;
  • 3 syringes of mint whitening gel 10 ml;
  • 1 cleaning spray of 17 ml;
  • 10 purifying wipes;
  • 1 x 5 LED treatment accelerator lamp;
  • 1 syringe of remineralizing gel 3 ml;
  • 1 paper color chart (to be cut on the side of the box).

Compared to its competitor Smile Avenue, White Care Box adds a cleansing spray and a syringe of remineralizing gel. Once you've brushed your teeth, you'll rub them with a spray-soaked wipe to make your teeth even smoother and more receptive to the action of the gel.

Its LED lights are powerful. The mouthpiece should be used for twenty minutes each day for one to two weeks.

The remineralizing gel is to be used after rinsing the mouthpiece, resting it for five minutes with this other gel. It helps to restructure theenamel andstrengthens your teeth. It is very useful for people with sensitive teeth.

Whtie Care Box is also made in the United States, the gel meets the European standards for dosages.

White Care Boxe costs about the same and is one of the best selling teeth whitening products in France.

Answers to common questions

What are the different ways to whiten teeth?

The bleaching pen

The teeth whitening pen is a separate solution. This is not a treatment per se, but a makeup for teeth. This means that the integrity of your teeth is not compromised, it is just a solution to be spread, thanks to the brush of the pen, which has an immediate but ephemeral effect.

white pen
The whitening pen allows to whiten in a very precise way.

The whitening is light, but looks natural. It is quite effective in camouflaging any stains you may have. You apply it in seconds and it wears off in a few hours, washed away naturally by your saliva and the rubbing of the inside of your lips against your teeth.

The pen is reserved for one-time use, for an appointment or an evening. It can be very useful if you have a devitalized tooth that has turned gray, while you replace it with a crown or have a veneer placed.

Whitening toothpastes

Whitening toothpastes should be handled with care. They often contain abrasive materials that can damage your tooth enamel. They should only be used sparingly.

Charcoal powder

Charcoal powder, usually from bamboo, is surprisingly black, but it does a good job of whitening teeth. It is not expensive and must be used in brushing, in addition to the toothpaste. The effect is visible, but remains moderate.


To get white teeth turmeric is a natural way to remedy the stains caused by coffee, tea or cigarettes.

Whitening strips

Whitening strips are not as well known as whitening kits or whitening toothpastes, but they are an interesting alternative.

Bleaching kit with application tray

The whitening kit with application tray is the most effective solution. It is used with a specific gel and a UV lamp. It allows to modify the color of the tooth in its mass.

Bleaching kit with application tray

As the most effective solution, it is the one we recommend. This type of kit is a little more expensive, but the results are more visible than with other solutions and its effect is more durable.

woman with LED
The teeth whitening kit is a very interesting solution to whiten teeth.

The principle of the whitening kit is to deposit gel at the bottom of the tray, and then apply it to your jaw, for twenty to thirty minutes, depending on the formula.

The gel used for the whitening kits with application tray

The specific gel contains an active ingredient which is either carbamide peroxide or hydrogen peroxide. Upon contact with tooth enamel, peroxide triggers a chemical oxidation reaction that attacks the staining compounds that dull your teeth.

Carbamide peroxide is a weaker version of hydrogen peroxide. It's all a matter of dosage, but the result is the same. However, you must make sure that the concentration is not too high, so as not to risk damaging your teeth.

The European standard is less than 0.1% hydrogen peroxide. The products we recommend below strictly respect the authorized concentrations. Beware of kits from the other side of the world whose dosages may be more fanciful and not always tested.

The gel may also contain sodium bicarbonate.

Instructions for use

You place the gel in the bottom of the tray and around its circumference and apply the tray for the required time, with an integrated LED light. Refer to the instructions which may differ from one brand to another.

The treatment must be followed daily, for two to three weeks.


The three kits proposed here are all effective, but we prefer the version of Smile Avenue which thinks more about your comfort with its thermo moldable gutters, without being more expensive.

Whichever you choose, all three products are perfectly safe for your teeth. If you're looking for more ideas, you can also check out our article on vegetable charcoal.

smile avenue

“Professional home tooth whitening kit

“Make your smile shine in 20 to 30 minutes

“Simple to use, safe method