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Teeth Whitening Gel For Trays: Syringes, Pods, Gels and More

Contributors:  

If you have whitened your teeth and want to keep your sparkly new smile, then you might want to know what the best teeth whitening gel in the UK is. Or, maybe you had your teeth professionally whitened by a dentist, and you want to maintain your smile at home.

mouth trays for whitening gel
Teeth whitening gel can help to maintain your pearly whites for longer after whitening treatment

Either way, if you've had your teeth whitened you'll want to keep them that way. You may only need to find more teeth whitening gel for trays, or maybe you need to find a full whitening kit.

Well, there are plenty of whitening kits available, as well as whitening gel refill pods and syringes. This article will discuss all of your options and answer the following questions, so you can keep your smile sparkly and your confidence high.  

  • Why do you need whitening gel refills?
  • What is the best whitening gel in the UK?
  • Can you use your whitening kit with a different brand of whitening gel?
  • What types of whitening gel refills are available? 
  • Are there different application methods? 

Let’s get started so you can get on top of maintaining those pearly whites!

The following table summarises all of the products that we will discuss in this article: 

Best Whitening Gel

Smile Avenue Gel Refills 

  • Whitening ingredient is Phthalimidoperoxycaproicacid (PAP) for peroxide free whitening

  • Contains Hydroxyapatite (HAp) to strengthen teeth while whitening

  • 3 whitening gel pens 

  • Whitening gel applied directly to teeth

  • No sensitivity or irritation

  • Easy and controlled application 

Hismile Teeth Whitening Pods

  • 6 whitening gel pods 

  • Whitening ingredient is Phthalimidoperoxycaproicacid (PAP) for peroxide free whitening

  • Contains nano-Hydroxyapatite (HAp) to strengthen teeth while whitening

  • Whitening gel applied to mouthpiece

  • No sensitivity or irritation

    test

Snow Whitening Wands 

  • 2-pack, 4-pack, 6-pack and 12-pack available to buy

  • Peroxide whitening

  • Whitening gel applied directly to teeth 

  • Designed for sensitive teeth 

  • Gluten-Free

  • Larger extra strength whitening serum also available

Why do you need whitening gel refills? 

If you have had your teeth professionally whitened, or you have whitened your teeth with a kit successfully, then you are probably wondering why bother with refills? 

Well, unfortunately, your beautifully white and stain-free teeth are not going to stay that way. Especially if you like to drink coffee, red wine or other highly-pigmented food or drinks! But, if you maintain your teeth after whitening, then they have a higher chance of staying white for longer. 

If you already have a whitening kit at home, getting refills for it is simple. You can simply order some more of the kind you already used. Or, you can potentially use another brand of refills with the teeth whitening gel for trays you already own from your kit. 

And, if you had in-office whitening treatment with a dentist, you will likely be able to buy refills with your dentist if you still have your whitening trays. Or, you may be able to buy refills online to use with your whitening trays, but check with your dentist first. 

What are the different types of whitening gels available? 

When looking at whitening gel for teeth it is important that you know the different types. Some can cause sensitivity, and some can even damage your teeth enamel and gum tissue if you’re not careful. This can depend on the ingredients, and also the application method. 

teeth whitening at the dentist
Teeth whitening gels used by dentists have a higher percentage of peroxide in them

Whitening gel ingredients 

Most people associate whitening gels with including hydrogen peroxide as the whitening agent. However, there are some available with peroxide-free ingredients that are safer for teeth. Some commonly used whitening gel ingredients include:

  • Hydrogen peroxide
  • Carbamide peroxide
  • Phthalimidoperoxycaproic acid (PAP)

Hydrogen peroxide is a well-known and effective whitening agent, but if used incorrectly it can damage your enamel and surrounding gum tissue. 

Teeth whitening gels used by dentists tend to have a much higher percentage of peroxide in them, but no more than 6% according to UK regulation. Over-the-counter whitening gels must also abide by UK regulations and can only have 0.1% or less hydrogen peroxide content. 

Some whitening gels are peroxide-free, HiSmile and Smile Avenue both use Phthalimidoperoxycaproic acid (PAP) which is much safer for teeth. These products also utilise ingredients like Hydroxyapatite which can help to remineralise your teeth while you whiten them. 

Types of teeth whitening gels 

Whitening gels not only come with different ingredients, but they can also come in different containers and styles. Some examples include:

  • Syringes 
  • Pods
  • Pens 
  • Strips

The different styles available can make a difference, some are messier than others, and some are safer for your teeth. If you already own a whitening kit you can use the refills with the mouthpiece, trays and LED lights that you already own. 

Whitening gels that come in the pen style involve the least mess and are safe for gums as you paint directly onto your teeth. Pods and syringes are simple to use as you just fill up your whitening tray and put it in to use.  

Strips aren’t used in conjunction with a whitening mouthpiece and LED light, but they do use a whitening gel that comes pre-applied. 

How do you apply the whitening gel to teeth?

strong teeth whitening gel
Hismile's fixed-shape mouthpiece with LED light technology

Different styles of whitening gel have different application methods, some are better for your teeth and gums and some an easier to apply. 

Pre-gelled strips: These are possibly the easiest to apply as you just dry your teeth and stick on the upper strip to your upper teeth and the lower one to your lower teeth. Then you remove them after the directed amount of time, which can be a messy process and leave gel everywhere. 

It can also be difficult to keep the gel from getting on your gums which can cause damage to the tissue and irritation. 

Fillable mouth trays: These are a little less simple as they require you to fill them with a pre-measured amount of whitening gel from a pod or syringe. When you put the mouthpiece in your mouth you should get enough gel on your teeth to whiten them. But, you may also get some on your gums.  

Gel pens: These require you to paint the gel onto your teeth, which is quite possibly the best method as you can make sure to get an even amount on your teeth and none on your gums. 

Here's a video on how to fill your custom trays from your dentist with teeth whitening gel:

How to use your dentist made custom made tooth whitening trays- a demonstration of putting gel in the trays and placing them in your mouth and some facts about tooth whitening and tips .

What is the best whitening gel in the UK?

The best teeth whitening gel in the UK is undoubtedly one that your dentist can use in-office or supply you with for a mixture of in-office and at-home whitening treatments. You can of course buy refills from your dentist, but they might be a bit more expensive. 

Fortunately, if you don’t want to pay dentist prices then at-home whitening kits and gels are your best bet. 

So, let’s jump in with our top picks for the best whitening gels in the UK. We have included whitening kits for those of you that don’t already have one at home!

Smile Avenue 

One of our top recommended tooth whitening gel and whitening kit is Smile Avenue. Their whitening gel comes in the form of gel pens which you paint directly onto your teeth rather than applying to a mouthpiece or tray. 

teeth whitening gel uk
Full control as you paint the gel onto your teeth

Smile Avenue whitening gel is a non-peroxide teeth whitening solution that uses the main ingredient PAP instead. Pap has been proven to have instant whitening effects and does not harm your enamel in the process. This whitening gel also has Hydroxyapatite as an ingredient which helps to strengthen and remineralise enamel as you whiten your teeth. 

The whitening gel refills are available to buy separately, you can buy 3 whitening gel pens for just £39.99. 

If you don’t already have a whitening kit, the Smile Avenue whitening kit comes with everything you need for a professional feel at home, including:

  • 4 whitening gel pens 
  • A shade guide
  • A mouth tray with built-in LEDs 
  • Adaptors to fit USB, USB-C and iPhone lightening sockets

This kit comes with 2 full courses worth of treatment, and when you run out if you wish to keep maintaining your whiter smile then you can easily buy their refills. 

Hismile 

Hismile is another company that uses peroxide-free whitening gel for teeth. They are similar to Smile Avenue because the main ingredient in their whitening gel is PAP. 

dental whitening gel
You can buy 6 Hismile refill pods if you already have the kit

But, instead of just Hydroxyapatite to remineralise your teeth while you whiten, they utilise nano-Hydroxyapatite, a nano-synthetic version that replaces minerals in damaged parts of enamel.

Another main ingredient of this whitening gel is Potassium Citrate, which helps to soothe any pre-existing tooth sensitivity you may have. All of these ingredients are safe for teeth whitening and actually strengthen your enamel and improve the health of your smile while they whiten. 

Hismile’s whitening kit comes in the form of pods, which you put into the LED mouthpiece to use. You can purchase a set of six refill whitening pods for just £39, or if you are interested in their whitening kit it costs £99 in the UK. 

When you purchase a  Hismile whitening kit, here’s what you get: 

  • A fixed-shape mouthpiece 
  • LED light that you attach to the mouthpiece with a 10-minute timer
  • 6 whitening pods
  • Instructions 
  • Whitening shade guide 

The kit comes with 6 whitening gel pods, and when you run out you can just buy another 6 pods to use with the whitening kit you already have. You can read more about the whitening kit in our full review, here.

Snow

The active whitening ingredient in Snow’s whitening gel is hydrogen peroxide. Snow is an American company so the percentage of peroxide used in the gel is higher than you can usually buy in the UK. 

hydrogen peroxide teeth whitening gel uk
Snow's whitening kit comes with 4 wants, or you can buy a standard or large refill wand

The whitening gel comes in the form of wands which you use to paint the gel directly onto the teeth before using your LED mouthpiece. In each kit, you get 3 whitening gel wands and 1 extra strength whitening wand. 

When you run out you can order refills that come in standard and large size. The standard refill size gives you an average of 21 treatment sessions and the large, 42 treatment sessions. 

If you want to buy Snow’s full whitening kit, here’s what you’ll get:

  • ​​4 whitening gel syringes
  • 1 mouthpiece with LED technology
  • 3 whitening wands and 1 advanced whitening wand
  • 1 tooth whitening progress tracker
  • 5-year warranty
  • 30-day money-back guarantee

Snow has 2 different kits, the original and the wireless kit, which you can read more about in our full review. 

Teeth whitening strips

Whitening strips come pre-gelled for your use, and both Snow and Hismile have them available. Or, if you want to check out some other whitening strip brands you can check out our article on the best whitening strips in the UK

Conclusion

If you like your confident, pearly white smile after having whitening treatment then it's important to find a way to maintain it. Whitening gels can help you do this, and the good thing is you can buy refills for ongoing maintenance! 

tooth whitening gel uk
Hismile's teeth whitening kit with whitening gel pods

There are quite a few different whitening kits and whitening gel types and styles on the market. The gels include whitening pods, pens, syringes and strips with pre-applied gel. And, there is also a choice of ingredients, some with hydrogen peroxide and others without. 

If you got your teeth whitened with a dentist, you can buy refills from them. However, our top pics for best whitening gels in the UK are Smile Avenue and Hismile. Their whitening gels are peroxide free and use PAP as the active whitening ingredient and other ingredients to strengthen your teeth as you whiten.

Snow is another good whitening kit that has gel pens that you use to paint the whitening gel directly on your teeth, or again you can just buy the refills. The whitening agent in this whitening gel contains hydrogen peroxide.

If you are interested in whitening kits then any of these 3 would be a good place to start. Or, if you are just looking for whitening gel then they all sell refills, that you can use with trays or any whitening kit mouthpiece with LED lights.  

FAQS

Can you buy teeth whitening gels used by dentists in the UK?

You can buy teeth whitening gel from your dentist, but it may not be as strong as the one they can use in practice due to UK regulations. Dentists in the UK can use products with up to 6% hydrogen peroxide. 

Over-the-counter products can only have 0.1% of hydrogen peroxide as per UK regulations, and therefore are not as strong as products the dentist can use.

Teeth Whitening Gel For Trays: Syringes, Pods, Gels and More
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Contributors:
Amanda combines her medical background with her love for writing to bring you informed and accurate content at Dentaly.org.
Sources

GDC. Tooth Whitening Position Statement. Consulted 21st November 2021.