About Us

Prüfengel offers authentic consumer tests in which real users share their experiences with products. Our tests are based on practical applications in everyday life and reflect the opinions of consumers. As we focus on consumer tests, we do not carry out material, long-term or laboratory tests. Our aim is to provide honest feedback to help you make a purchasing decision. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product reviews, please click here.

Onlysmile
Teeth whitening system

The high-quality nature and gentle action of OnlySmile ‘s teeth whitening system make it an effective and user-friendly option for intensive teeth whitening. The OnlySmile teeth whitening system is an all-in-one package for cosmetic teeth whitening at home. The built-in rechargeable battery in the LED lamp makes it possible to move around freely during treatment. The product has an attractive, flawless design. The uncomplicated and safe use of the tooth whitening system, coupled with its long-lasting effect thanks to its economical consumption, creates an impressive effect. The production and development of this product took place in Germany. The OnlySmile tooth whitening system is supplied with gel, mouth tray, LED lamp and USB cable. Teeth whitening is simple, quick and effortless. Using the tooth whitening system is simple and safe. The OnlySmile teeth whitening home set is certified and provides a consistently safe feeling and radiant white teeth.

Advantages

✅ Easy and safe to use
✅ Made in Germany
✅ Gentle
✅ Certified

Disadvantages

❌ First-time use requires some practice

The test

General information

We took a close look at and tested the product in a practical test. In the following, we take a closer look at the features and impressions. From the packaging, materials and quality to the range of functions and handling, the product is subjected to our test procedure.
To give you a quick overview, we work with a points system. The maximum achievable score per area is 100 points. The final overall score is calculated from the average of all tested features, taking into account the respective weighting. For a detailed insight into our comprehensive evaluation process, which forms the basis of all our product ratings, please click here.

The first impression

Packaging and contents

ℹ️ Here we take a closer look at packaging. Sustainability is becoming an increasingly important factor. In addition, adequate protection of the product must of course also be guaranteed. Are the contents of the packaging complete and does the manufacturer make it as easy as possible for me to use the product straight away?

CriterionRemarkScore achieved*
Product protectionCarton is sturdy, product sufficiently protected100 points
Sustainability PackagingNo unnecessary packaging waste was produced100 points
Package contents & scopeComplete100 points
Instructions for useClearly written in German and English100 points
Total100 points
Weighting: 20%
*The maximum score is 100 points

The tooth whitening system was delivered in a sturdy cardboard box that was undamaged and easy to open. The tooth wh itening system was packed in sturdy product packaging that protects the product from damage and thus ensures comprehensive product protection. No unnecessary packaging waste was used. Instructions for use are available and easy to understand. This makes the product easy to handle. The packaging is fully recyclable. The tooth whitening system makes a very good impression at first glance.

The first time in your hand

Product processing and appearance

ℹ️ Before we start the practical test, we take a close look at the workmanship of the products. How high quality are the materials used? Are the look and feel satisfactory?

CriterionRemarkScore achieved*
Visual appearanceOutstanding visual presence.100 points
ProcessingOutstanding workmanship100 points
StabilityVery stable100 points
Sustainability of the productNo information on sustainability, but high-quality materials80 points
MiscellaneousSuitable as a gift100 points
Total96 points
Weighting: 20%
*The maximum score is 100 points
All important instructions are printed on the packaging.

The tooth whitening system impresses with its pleasant appearance and ease of use. The robustness of the product is demonstrated by its high quality and durable workmanship. The workmanship is very good, with no visible defects or unclean transitions. The manufacturer has not provided any additional information regarding sustainability . The gel contains less than 0.1% hydrogen peroxide (in accordance with Directive 2011/84/EU) and is therefore safe for teeth and gums.

This is what our practical test showed

Does the manufacturer keep its advertising promises?

ℹ️ Our practical test has the highest relevance and therefore weighting. Here, the product has to undergo a wide range of criteria and tests. We check the functions and product promises of the test article.

CriterionRemarkScore achieved*
DesignAttractive design, very good grip of the rail100 points
ApplicationThe tooth whitening system is easy and convenient to use, which enables efficient tooth whitening. 97 points
CompatibilityGentle and well tolerated100 points
Scope of deliveryComprehensive for a wide range of applications100 points
Handling the canInitial use and dosing requires some practice. 85 points
Total96 points
Weighting: 45%
*The maximum score is 100 points

The practical test has shown that the manufacturer keeps its advertising promises regarding the use of the tooth whitening system. Using the home set is uncomplicated and convenient, and it enables effective tooth whitening. The effect should be visible after a few applications. The taste is extremely pleasant. The gel leaves a fresh feeling in the mouth. In addition, the application is characterized by extremely economical consumption.
The design of the tooth whitening system is simple and appealing. The tray makes a professional and first-class impression. This leaves a positive impression.
Initially, the application required some practice. The gel is used together with the whitening lamp and the tray . The tooth whitening system removes superficial discoloration . The tooth wh itening system is particularly suitable for use at home.
The production and development in Germany is particularly pleasing. The tooth whitening system is suitable for long-term whitening results.
In summary, it can be stated that the manufacturer keeps its promises regarding the application, design, compatibility and quality of the tooth whitening system . The home set enables efficient bleaching. The simple and attractive design completes the overall appearance. After our test of the OnlySmile teeth whitening system, we can confirm that the application is extremely effective. Regardless of influences such as wine, nicotine, tea, red wine or coffee, the teeth always remain protected from discoloration. The teeth whitening home kit from OnlySmile is certified and offers a completely safe experience and radiantly white teeth.

Price/performance ratio

and ratings from consumers

ℹ️ Finally, we examine how the product compares to the competition. Can it keep up with the competition in terms of price and quality? Would we generally recommend buying it? We also look at the consumer reviews and check whether the critical and positive reviews are actually justified.

CriterionRemarkScore achieved*
Price / performance ratioVery good performance in the mid-price segment80 points
Rating cut4.4 out of 5.0 on Amazon70 points
Total75 points
Weighting: 15%
*The maximum score is 100 points

On the Amazon platform, consumers rate the product with an average of 4.4 stars. There are often complaints that the effect is too weak, while other customers see a good effect after the first use of the tooth whitening system. In our practical test, we were able to confirm that the tooth whitening system is a good method for whitening teeth.

Prices of up to €192 are charged on the internet for equivalent products. Very inexpensive products are available from as little as €48 . The teeth whitening system from OnlySmile is therefore currently in the middle price segment with a price of €95. For the quality and performance received, the price-performance ratio is very good.

Overall result

WeightingScore achieved*
1. packaging & contents20%100 points
2. product processing & appearance20%96 points
3. in the practical test45%96 points
4. price/performance & consumer ratings15%75 points
Total94 points
*The maximum score is 100 points

The teeth whitening system of the OnlySmile brand was rated with an overall score of 1.3 and thus successfully qualified for our test seal. The test was carried out in the test period 02/24 and is stored in our database under the license number 240124007. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

Test result:

1,3

Teeth whitening system
of the brand
Onlysmile
achieved
94
Points in our test and therefore passed. The test was carried out in the test period
02/24
and is stored in our database under the licence number
240124007
. Further information on our test procedure can be found at www.pruefengel.de/testverfahren.

The practical tests are based on careful observations and do not include long-term or laboratory tests. The test judgements reflect the personal impressions and opinions of the testers who try out the products in everyday use. We would like to emphasise that these evaluations do not claim to be exhaustive and may reflect both subjective and objective impressions. The evaluations are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a serious and thorough testing procedure, which has been developed in a long and professional process in close co-operation with our testers.

The practical tests are based on careful observation and do not include long-term or laboratory tests. The test ratings reflect the opinion of our experts and are based on careful analysis. We would like to emphasize that these evaluations do not claim to be exhaustive and reflect both subjective and objective impressions. The assessments are made to the best of our knowledge and belief, without any liability being assumed for the accuracy or completeness of the test results. It is important to note that our tests are not based on legal requirements, medical effects or specific ingredients of the products. We rely on the advertising claims and information provided by the manufacturers, but use of the information is always at your own risk. Our efforts are aimed at ensuring a reputable and thorough testing process, which has been developed in a long and professional process in close cooperation with our experts.

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Evaluation process

You can find a detailed insight into our evaluation process, which forms the basis for our product ratings, here:

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Our product evaluations are carried out exclusively through direct, on-site tests. This ensures a detailed and specific examination of the product properties. You can find more information about the test procedure here.

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