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1677 total reviews

Duo Teeth Whitening Strips Pack

Duo Teeth Whitening Strips Pack

Show off your new diamond-like white smile with these all natural strips:

- Get visible results in just 3 days
- Up to 9 shades of whiter teeth
- Whitening treatment on the go
- Hydrogen Peroxide Free
- Boosts confidence
- Enamel safe

  • FREE Shipping
  • 30-Day Guarantee
  • All Natural
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Customer Results

Before and after comparison using Whitening Laboratory Strips, showing teeth before treatment and significantly whiter after.
Dramatic whitening results with Whitening Laboratory, with the first image displaying yellowish teeth and the second showing a brighter smile.
Visual proof of Whitening Laboratory's effectiveness, with the pre-treatment discolored teeth and post-treatment radiant white teeth.

Find more about the Whitening Strips below


Suitable for sensitive teeth

Whitening treatment on the go

Hydrogen Peroxide Free

Up to 9 shades of whiter teeth

PAP+ formula

Enamel safe

Removes old stains

How to Use

Use the Whitening Laboratory Strips daily, till reaching the desired level of white, or before a special event.

1. Begin the treatment at night.
2. Brush your teeth before applying the strips.
3. Dry your teeth for better adhesion of the strips.
4. Peel the longer strip and apply it with the sticking side towards the upper teeth. Fold the extra length behind the teeth.
5. Repeat with the shorter strip for the lower teeth.
6. Leave the strips on for 30-60 minutes.
7. Remove the strips and discard them.
8. Rinse your mouth thoroughly. Gently brush your teeth to remove any gel residues.


Whitening Laboratory is the perfect product for an at-home daily use teeth whitening regimen.

Get visible results in just 3 days. Most of the customers notice their teeth whiter right after the third session.

Contrary to the traditional whitening strips, this formula is hydrogen peroxide free. It does not strip the enamel and it does not cause teeth sensitivity.

Formulated with PAP+, which does not remove the minerals from the teeth’s hard structures. Enriched with Hydroxyapatite, which strengthens the teeth against acids, erosion, and plaque buildup. The Whitening Laboratory strips effectively remove years of stains even from the most sensitive teeth.


Ingredients in the Whitening Strips: Aqua (Water), Glycerin, Propylene Glycol, Cellulose Gum, Hydroxyethylcellulose, Phthalimidoperoxycaproic Acid, Hydrated Silica, Dicalcium Phosphate, Cocos Nucifera (Coconut) Oil, Carbomer, Disodium EDTA, Sodium Hydroxide, Menthol.

Delivery & Return

Free Delivery is included in the price and takes about 3 to 5 business days to be delivered. However, if you choose Express Delivery at the checkout, the products will be dispatched the same day, and it takes 1 to 2 business days to be delivered. 


This product is only effective on natural teeth. False teeth, dental crowns, and veneers cannot be whitened. Not suitable for children under the age of 16, if pregnant or breastfeeding.

Customer Reviews

Based on 1677 reviews
Sandra Cookson

I’m nearly at the end of them and tbh I’m a bit disappointed, thought the results would be better

josephine clinton
Amazing product!

Works after each application

Lisa Barton

Premium Teeth Whitening Strips - 21 Whitening Sessions - Safe for Enamel - 42 Peroxide Free

Nigel Parkin
Teeth whitening strips

I must admit I was a bit sceptical, when I bought them but to be perfectly honest they do work I noticed my teeth getting whiter after only a couple of days brilliant 👏 😀

Sally Barber
Deliver slow so not had time to use properly

Only had these a short time as they took a long time to reach me so can’t review

First try was very positive. I left them in for about 35 minutes and experienced zero tooth sensitivity, and also no burning sensation on my fingers, which is the norm with peroxide strips. I took them off and could see the beginnings of the tooth whitening, which is always a little patchy on the first two or three sessions, but it showed to me that it is working!

- Mr. B. D. Mumford -

  • 3 Weeks Treatment

    As a 21 days prolonged treatment or whenever you feel like.

  • Peroxide Free

    A peroxide-free formula that will not damage your enamel.

  • Instant Effect

    Instantly see the effects with our 1 Hour Express whitening.

  • Mint Flavour

    Feel the lingering cool effect of mint on your tongue.


Should I use it every day?

Yes, you should use it every day. There are 21 packs of whitening strips for 21 whitening sessions. One pack per day, for 21 days in a row. However, if you have already obtained your desired result, you can apply the strips from time to time, to maintain the white effect.

Can I use 2 packs of strips per day?

No, you should use only one pack of strips per day.

Is it ok if I swallow the gel?

You shouldn’t swallow the gel coming from the strips. However, small amounts might be swallowed in the process, similarly with the toothpaste. If this happens, don’t panic. The product is intended for oral care, and unintentional swallowing of the gel was taken into the consideration when developing the formula and choosing the ingredients.

My gums turned white, why?

In rare cases, gums might appear white after they come into contact with the whitening gel. This is also known as a chemical burn. The gums will return to normal very shortly after exposure to the whitening gel. Usually, this happens to consumers with overly sensitive gums, or to those who have a gum disease. Don’t apply the strips on the gums. The strips should be applied only on the teeth.

I have white spots on my teeth, why?

In some cases, right after the whitening sessions, you might see white spots on your teeth. Your teeth already had these white spots, but with the bleaching, they became more visible. These spots will fade away as the whole teeth becomes lighter after completing the whitening treatment.

How long should I wait till I can have food?

We recommend that you do your whitening sessions before going to bed, so you avoid having food and drinks afterwards. However, if you opt for a different regime, we advise you to wait at least 2 h before having food and hot drinks. We strongly advise you to abstain from dark-coloured foods (blueberries, beetroot, chocolate, etc.) and drinks (red wine, black tea, coffee) for the whole duration of the whitening treatment.

Should I brush my teeth right before the whitening session?

We recommend to brush your teeth 30 minutes before starting the whitening session. Allowing this 30-minute break between brushing and whitening will make your teeth less sensitive

Can I brush my teeth after the whitening session?

You can brush your teeth gently afterwards.

Should I remove the mouth opener after applying the strips?

Yes, you should remove the mouth opener after applying the strips. The function of the mouth opener is to help you apply the strips.

Does it work on veneers, crowns, fillings, etc.?

The whitening strips have a whitening effect only on natural teeth. It won’t damage your veneers, crowns or fillings, but won’t whiten them as well.

Is it suitable for vegetarians?

Yes, this product is suitable for vegetarians.

Do you test it on animals?

We do not test on animals. This is a cruelty-free product.

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WhiteningLaboratory Office for Teeth Whitening

Discover a brighter smile with our Premium Teeth Whitening Strips, perfect for sensitive teeth and busy lifestyles. Our hydrogen peroxide-free strips are designed for safe use, ensuring up to 9 shades of whiter teeth without damaging enamel. With our innovative PAP+ formula, you can effortlessly remove old stains and enjoy a whitening treatment on the go. Simple to use, apply our enamel-safe strips daily to achieve professional-level results and a dazzling smile for any special event.

Whitening Laboratory mobile app displayed on a smartphone, providing easy tracking of teeth whitening progress and personalized tips.

Mobile App

For a better tracking of your progress, we recommend to install our App, that can be found on Play Store and App Store.

Whitening Laboratory Logo Wall

No results? Money back guarantee.

Rest assure. In order to be sure that each of our customer will be happy, we offer 100% money back guarantee in case no results are seen.

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