BLACK FRIDAY  |  Shop 30% off all products!

Desensitising Gel Refills

Refill option
Make it a kit with custom-fitted trays
More information

How Afterpay works

Fill Your Cart

Fill your cart
Add your favourite Smileflex products to your cart and head to checkout.

Choose AfterPay At Checkout

Choose Afterpay at Checkout
Select Afterpay as your payment method in the third step of checkout.

Enjoy Instant Approval

Enjoy Instant Approval
Log into or create an Afterpay account, with instant approval in seconds.

Split Into Installments

Split into Instalments
Your purchase will be split into 4 instalments, to be paid every 2 weeks.

You don’t have to wait until payday for dental care!

Unlike a traditional lay-buy, Afterpay allows you to receive your products straight away, meaning you can smile now and pay later!

All you need is:

  • To have a debit or credit card ready
  • Be over 18 years of age
  • Be a resident of Australia

To use this service:

  • Select Afterpay as your payment option in checkout
  • Follow the prompts to either create or log in to your Afterpay account

Shipping information

FREE

Australia Post Standardon all orders $70+ (including 3-way shipping for custom orders!)

$6.99

Australia Post Standardon orders below $70 (4-6 business days)

$9.99

Australia Post Expresson all orders (1-2 business days)

Please note: The shipping time frames above may differ in length between each state.

Estimated delivery time frames are based on Metro areas.

Need gel refills for your Smileflex custom trays? Reduce tooth sensitivity with our dental grade desensitising formula. Each refill box contains 3 gel syringes for a total of at least 9 treatments. Flex your smile and save by selecting our 6 syringe option which includes free shipping!

If you require custom-fitted trays for your desensitising gel refills, simply check the kit option above the Add to cart button.

  • Dental grade gel formula
  • Reduces tooth sensitivity
  • Removes plaque
  • Protects against demineralisation
Reduce tooth sensitivity

Dental Grade Gel Formula

Minimum sensitivity, maximum strength. The Smileflex formula is powered with Potassium Nitrate, the most superior desensitising agent in relieving dental hypersensitivity. Protecting the nerve from external stimuli, it has been scientifically proven to repair and strengthen teeth. Use after teeth whitening treatment or for every day general sensitivity, our safe and effective formula will soothe your teeth and ensure they remain protected.


Causes of Tooth Sensitivity

Make sense of sensitivity. It's a familiar feeling when encountering certain foods and temperatures that involve pain or discomfort. Your teeth's dentine contains thousands of microscopic tubules, or channels, that lead to the pulp. When exposed to the elements, these channels allow hot, cold, acidic or even sticky substances to reach the nerves, causing pain.
Some factors that contribute to sensitive teeth may include:
All teeth whitening
It's common for some people to feel sensitivity a few hours after any whitening treatment—that's just the whitening agent finally reaching nerves in the pulp. It's completely harmless and shortly goes away.
Hard impact
This includes biting on hard candy and ice, or grinding your teeth. Cracks expose the nerve endings in tooth pulp, which cause discomfort when they come into contact with your opposing teeth, food and bacteria.
Receding gums
Unfortunately this happens naturally with age—gums recede and expose the previously protected dentine.
Brushing too hard
The easiest way to damage your enamel is with harsh bristles that cause abrasion. Try to brush gently in a circular motion.
Acidic foods and mouthwash
The acidity burns down enamel, and mouthwashes can further enrage sensitivity.
Too much soda
The sugary by-products will degrade enamel by softening it, leaving it vulnerable. Low-sugar soda helps but is still very acidic.

Treatment For Tooth Sensitivity

Effective and efficient. Research and consumer feedback indicate desensitising gel is the most effective treatment for sensitive teeth. In the process, teeth are also strengthened and increase resistance to acidic foods and bacteria. Together with the Smileflex desensitising gel, any of the following are recommended:
Use sensitive toothpaste
This type of toothpaste has ingredients specifically designed to fill the exposed tubules in the dentine.
Brush softer
Use a soft-bristled toothbrush at least twice a day and replace every 3 months.
Clean teeth after eating
It is important to remove bacteria that might otherwise settle and corrode enamel. Cleaning your teeth might include gentle brushing, flossing or simply swishing water around for a few seconds.
Avoid clamping
Eat less hard foods and avoid grinding your teeth. Many people grind unconsciously when they're sleeping and the best treatment for the pain is a Smileflex night guard.
Product details

The desensitising gel refill comes complete with 3 desensitising gel syringes (6 x syringes and custom trays option available) and an instruction booklet.

Tap an ingredient for more information

Desensitising Gel

Potassium Nitrate, Sodium Fluoride, Carbomer, Poloxamer 407, Propylene Glycol, Deionized Water, Polyvinylpyrrolidone (PVP), Menthol.
Sensitivity Relief Reduces Plaque Protects Enamel

Desensitising Gel

Potassium Nitrate, Sodium Fluoride, Carbomer, Poloxamer 407, Propylene Glycol, Deionized Water, Polyvinylpyrrolidone (PVP), Menthol.
Sensitivity Relief Reduces Plaque Protects Enamel

Shipping information

FREE

Australia Post Standardon all orders $70+ (including 3-way shipping for custom orders!)

$6.99

Australia Post Standardon orders below $70 (4-6 business days)

$9.99

Australia Post Expresson all orders (1-2 business days)

Please note: The shipping time frames above may differ in length between each state.

Estimated delivery time frames are based on Metro areas.

Returns information

If your order is incorrect, faulty, or missing, please contact us and our friendly customer support will respond within just a few hours.

If your custom items do not fit in a way they can be used as intended, you can submit a returns form within 7 days of delivery for one of our dental technicians to review.

If you are not satisfied with the non-custom items you have received, you can submit a returns form within 30 days of receipt, providing they are in original resalable condition.

To learn more about our returns policy, and to submit a returns form, visit our Returns Policy page.

How Afterpay works

Fill Your Cart

Fill your cart
Add your favourite Smileflex products to your cart and head to checkout.

Choose AfterPay At Checkout

Choose Afterpay at Checkout
Select Afterpay as your payment method in the third step of checkout.

Enjoy Instant Approval

Enjoy Instant Approval
Log into or create an Afterpay account, with instant approval in seconds.

Split Into Installments

Split into Instalments
Your purchase will be split into 4 instalments, to be paid every 2 weeks.

You don’t have to wait until payday for dental care!

Unlike a traditional lay-buy, Afterpay allows you to receive your products straight away, meaning you can smile now and pay later!

All you need is:

  • To have a debit or credit card ready
  • Be over 18 years of age
  • Be a resident of Australia

To use this service:

  • Select Afterpay as your payment option in checkout
  • Follow the prompts to either create or log in to your Afterpay account

Frequently Asked Questions

You asked, we answered! We’ve put together some of the most commonly asked questions about our desensitising gel refills. If you can't find the answers you're looking for below, head over to the Smileflex Help Centre for even more information.

Our desensitising gel is formulated to treat tooth sensitivity caused by whitening and prevents re-staining in the process. It can also be used for people with general tooth sensitivity as it rejuvenates, strengthens and desensitises enamel after treatment.

Your teeth's dentine contains thousands of microscopic tubules, or channels, that lead to the pulp. When exposed to the elements, these channels allow hot, cold, acidic or even sticky substances to reach the nerves, causing pain.

Our formula is powered with Potassium Nitrate, the most superior desensitising agent in relieving dental hypersensitivity. It provides a film-like varnish for sensitive teeth, sealing those channels of exposed dentine and other areas where sensitivity is a concern.

Yes! At the top of this page you'll find a custom-fitted trays kit option above the "Add to cart" button. Select this option to have custom trays included in your order.

Product reviews

Join the Flex Club

Desensitising Gel Refills