HiSmile Teeth Whitening Review


What is HiSmile Teeth Whitening Kit?

Tooth discoloration is the most common problem of all dental issues. The causes of tooth discoloration include poor dental hygiene, tobacco use, disease, medications, genetics, aging, trauma, environment, and lifestyle factors like smoking and drinking beverages like coffee, wines, and tea, etc. Because of such diverse reasons, almost all of us may likely develop tooth discoloration to an extent. After developing tooth discoloration, we grew increasingly sensitive to our smile. To get rid of this unnecessary sensitivity, we must seek professional help for getting back our bright smile. But professional help is very costly- it costs you around 200 to 300 pounds in the UK!

HiSmile teeth whitening kit is a cheaper alternative to costly professional teeth whitening treatment- you can save up to 60% with HiSmile teeth whitening kit. HiSmile teeth whitening kit is an at-home teeth whitening solution designed to wash out stains and give you whiter and brighter teeth without any pain. The kit consists of a fixed-shape mouth tray, blue light LED device with a timer, 3 x 3ml syringes of whitening gel, user’s instructions, and a color chart to match the shade of your teeth and to measure your whitening progress.

Who Needs It?

HiSmile teeth whitening kit is suitable for every age group but you must have not any profound dental problem. In case, you are suffering from a major dental disease, you must consult your dentist before starting this at-home whitening treatment. HiSmile teeth whitening kit can treat any tooth discoloration. It is helpful in whitening

  • Yellow teeth due to loss of enamel layer
  • Brown teeth due to the use of tobacco and dark beverages like tea or coffee
  • Purple teeth due to consumption of beverages like red wine
  • Black teeth due to tooth decay

How Does It Work?

If you have any of the above tooth discolorations then go get your HiSmile whitening kit. HiSmile is a blue-light LED device that has small LEDs evenly distributing light across your teeth. When you get your package, open it, and follow the following simple steps to start your at-home whitening treatment.

  • First of all, unbox your package and fill the fixed-shape tray with the provided whitening solution (3 X 3ml syringes).
  • Then wear the mouth tray and power on the LED light. The LED light has an in-built timer of ten minutes.
  • Keep wearing it till the LED light is off (for ten minutes a day). When the light gets off, then remove the mouth tray.
  • Repeat the process for six consecutive days and feel the difference with the provided shade chart.

HiSmile claims that after wearing the mouth tray just for only one time, you will feel a considerable whitening effect. When you wear the mouth tray and power on the LED light, the whitening solution in the tray is activated and it starts its bleaching action and breaks away the stain molecules of your teeth.

In contrast to other whitening solutions that contain hydrogen peroxide as a whitening agent, the HiSmile whitening solution contains Phthalimidoperoxycaproic Acid (PAP) and Potassium Nitrate Hydroxyapatite as whitening agents. PAP whitens teeth through the process of oxidation which enhances the efficacy of the treatment. In addition to whitening teeth, Potassium Nitrate Hydroxyapatite mineralizes and strengthens teeth and protects teeth and gums from sensitivity.   

What is the Cost of the Treatment?

The HiSmile teeth whitening kit is a cheap, affordable, and effective at-home whitening treatment. The whole kit will cost you around 55 pounds. You can get whitening solution refills for just 20 pounds.

HiSmile offers a monthly subscription service that sets you up with monthly deliveries of your Hi Smile essentials, shipped to you automatically every month. With the subscription service, you will get a 15% discount.


  • Portable and Convenient: The HiSmile whitening kit is portable and you can wear it anywhere and anytime. As the HiSmile kit is an at-home whitening solution so it is a very convenient treatment.
  • Fast Treatment: This at-home whitening treatment spans over only 6 days and also the daily treatment process lasts only for ten minutes.
  • Cheap Solution: The HiSmile kit is not only quick but it is also cheaper. For example, the average cost of professional whitening treatment ranges from 200 to 300 pounds while the cost of the kit is only 55 pounds.
  • Effective Treatment: HiSmile whitening kit is an effective at-home whitening solution. The built-in LED light enhances the effectiveness of the whitening solution. The unique and improved whitening solution formula of this kit not only whitens your teeth quickly but it also promotes teeth and gums’ health.

Likewise any other product, the HiSmile teeth whitening kit also has some downsides. The major downside of the HiSmile whitening kit is that this at-home kit is not as effective as a professional whitening treatment. This is quite understandable as the whitening solutions administered by a professional dentist contain higher concentrations of the whitening agent as compared to over-the-counter whitening products like the HiSmile kit. Also, at-home whitening treatment is slow-paced. For instance, you can whiten your teeth professionally in just one office visit but with the HiSmile teeth whitening kit, you have to wait for six days to get back your glittering smile.

HiSmile teeth whitening kit is one of the best at-home teeth whitening solutions. This is the reason why people are increasingly using it and are satisfied with its treatment. On the trust pilot, HiSmile has a 4.5 rating. Following are a few of the patient testimonials praising the effectiveness, reliability, and safety of the HiSmile kit.

“It is easy to use and has a simple step-to-step guide. I was sceptical too it as always with these kinds of commercialized products, but it is easy to use and has a simple step-to-step guide. Clean package and everything; already seeing results after 4 uses.”


“Absolutely amazing love this product I could see my teeth getting whiter every day love it.”

Bryce Barley

“Very good product. After using it for 2 days I already noticed a my teeth was looking better, after the 6 days of use my teeth was a lighter shade. Definitely a 5 star product, will be buying the gels to continue the whitening effect.”

Dan Mason

“Can really see a difference within 3 uses, my teeth are definitely whiter, I don’t smoke or drink any dark drinks so this helps too. Have ordered refills. Can’t wait to see the end result. Only thing I would say is that it would be better to have a mouldable gum shield to use. I would suggest applying the gel directly onto the teeth.”

Sacha Williams

“I have only had the product for a day now, so it is far to early to determine whether or not I feel this is a legitimate and effective whitening plan.. which is why I stuck with a 4 star rating for now. Ordering was easy, its not overly pricey, and it all arrived rather quickly. If it does end up working well, this product/company is an easy 5 Star rating for me personally.”

Andrew Vincent   

Read our market overview for all teeth whitening kits in UK here.

Teeth Whitening Kits in UK


With time, our teeth lose their brightness and this happens without our notice. We only become aware of our discolored teeth when it is too late. Have you ever thought about why our teeth lose their brightness? Well, there may be several factors involved but the major reasons for teeth darkening are smoking and drinking beverages like coffee, colas, wines, and tea, etc. All these lifestyle-related factors stain our teeth with time and we all end up with not-so-bright teeth. But there is good news and that is you can undo your stained teeth and can get back a sparkling smile. Getting back your white teeth is a science in itself which you need to understand.



The Science Behind Teeth Whitening

For understanding, the science behind teeth whitening, you must understand the structure of ‘human tooth’. The human tooth is made up of four parts namely enamel dentin, cementum, and pulp tissue. Enamel is the outermost layer while pulp tissue is the innermost part of the tooth. The visible portion of the tooth is known as the dental crown while the submerged portion is called the tooth root. It is the dental crown that makes our smile healthy, glittering, and attractive. In the tooth crown, the outer enamel layer and the underlying dentin layer are the most important for teeth coloration. The outer enamel is translucent and porous. When you smoke or drink a cup of coffee, the coloring pigments in tobacco and coffee pass the porous enamel only to be deposited on the dentin. So dentin is stained and our teeth get discolored. After understanding teeth staining, now you can easily understand that why normal toothpastes can’t whiten teeth-normal toothpastes can only remove stains from the enamel.

As normal toothpastes can’t give you sparkling smile so you must seek professional help for whitening your teeth. When you visit your dentist, he will examine your oral health and then will apply a bleaching agent-normally hydrogen peroxide are carbamide peroxide-for removing stains from your dentin. This in-office whitening treatment is a simple procedure and is called ‘chairside bleaching’. Chairside bleaching usually requires one office visit.

In case, you don’t want to undergo chairside bleaching then your dentist can provide you with a custom-made tray for at-home whitening. You will also be provided with a bleaching solution or gel. The dentist will give you detailed guidelines about the use and duration of the procedure of at-home whitening treatment. Whether ‘chairside bleaching’ or at-home whitening treatment under the supervision of a dentist; visiting a dentist is a costly business and therefore everyone can’t afford it. As compared to professional whitening treatment, over-the-counter teeth whitening products are a cheaper alternative. Among over-the-counter whitening products, teeth whitening kits are more popular.

Teeth Whitening Kits

Teeth whitening kits are the preferred home whitening solution these days. A typical teeth whitening kit consists of trays usually made up of high-quality plastic and whitening gel or solution. Trays are filled with whitening gel and then are placed into the mouth for a while. After wearing a tray, whitening gel penetrates through the porous enamel and washes out stains on the dentin.

The whitening gel is mainly of two types; peroxide and non-peroxide. In the former type, either hydrogen peroxide or carbamide peroxide is the bleaching agent while in the later, sodium-based compounds like sodium chlorite or sodium bicarbonate are used as the whitening agent. Some whitening gels also contain activators that help enhance teeth whitening.

The whitening gels of these kits contain less amount of bleaching agent as compared to whitening gels administered by professionals-dentists. For example, the whitening gel of the kit contains only 0.1 % of hydrogen peroxide while a dentist can administer as high as 6% hydrogen peroxide. Because of the lower concentration of peroxide, whitening gels comparatively take more time to whiten teeth. Some people find it inconvenient to wear the whitening tray as they are not used to it.

Despite the few downsides, teeth whitening kits give us the freedom of time and space. We can whiten our teeth in the comfort of our homes- thanks to these portable whitening kits. These whitening kits can also be used by people with sensitive teeth. Since the amount of hydrogen peroxide is lower in the kits so they don’t sensitize teeth and can comfortably clean the sensitive teeth. Finally, teeth whitening kits are much cheaper than a chairside procedure- in the UK, the cost of professional teeth whitening treatment ranges from 200 to 300 pounds while a teeth whitening kit treatment may cost only 30 to 50 pounds.

Types of Teeth Whitening Kits

There are three major types of teeth whitening kits.

  • Kits with moldable trays
  • Kits with prefilled trays
  • kits with either type of tray and LED light

How Teeth Whitening Kits Work

The working process of a teeth whitening kit is pretty simple. The trays containing the whitening gel is worn tightly so that whitening gel in the tray penetrates the porous enamel to reach the dentin layer of your teeth. Once reached the dentin, the bleaching agent starts its bleaching process and breaks down stain molecules.  Gels with higher concentrations of hydrogen or carbamide peroxide are more effective as compared with those having lower concentrations of peroxide. Usually, you have to wear a tray from 10 to 30 minutes a day and the treatment may range from few days to few weeks.

For whitening your teeth with whitening kits, usually, the process will involve the following steps.

  • First of all, brush your teeth.
  • Then, remove trays from the packaging.
  • Fix both trays onto your teeth.
  • Close your mouth, but bite down hard to avoid oozing of the gel.
  • Keep the trays in position for the specified period as in the instructions. Afterward, remove and dispose of the trays.
  • Use water to rinse the teeth and gums of any excess gel.

Teeth Whitening Kits and Their Cost in the UK

Here are the five most popular teeth whitening kits you can buy in the UK.

  • HiSmile Teeth Whitening Kit

The HiSmile teeth whitening kit is an at-home teeth whitening solution. You have to wear it for 10 minutes a day for 6 consecutive days. This kit costs about 45 to 50 pounds.


hismile whitening kit


  • iwhite Instant Teeth Whitening Kit

iwhite Instant teeth whitening kit contains ten prefilled trays. You have to wear it for 20 minutes once a day. Five days’ treatment would be enough for giving you a bright smile. The cost of this kit ranges from 30 to 35 pounds.

  • COCO LAB Teeth Whitening Kit

COCO LAB teeth whitening kit resembles the HiSmile whitening kit. This kit contains whitening gel in three syringes which is enough for ten days. This kit will cost you 45 to 50 pounds.

  • Smile Science Harley Street Professional Teeth Whitening Kit

The treatment procedure of this kit will take 20 minutes every day. This kit has additional vitamin-rich toothpaste for improving your oral health. This kit will cost you around 30 to 35 pounds.

  • Luster Pro Light Teeth Whitening System

This Luster kit can reverse yellow stains of your teeth very effectively. You have to use it for 30 minutes a day and it will cost you around 45 to 50 pounds.

Final Word

According to the ‘American Academy of Cosmetic Dentistry’, a smile is the most important social feature. Therefore our smile deserves a little investment of time and finance and these portable teeth whitening kits are the best products for improving our ‘most important social feature’.