Crest 3D White Whitestrips and Therapy Review

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For those with sensitive teeth, whitening options are often limited and daunting. Crest 3D White Whitestrips and Therapy Dental Whitening Kit is an affordable DIY system that both whitens your smile and strengthens your enamel, making them the perfect choice if you have sensitive teeth (view on Amazon).

Whatever your reason for wanting whiter teeth, you are not alone.  Teeth whitening is the most requested cosmetic service today and according to the American Academy of Cosmetic Dentistry this popularity looks set to continue. Why is this?  Teeth are naturally white, aging and bad habits cause them to yellow so a white smile is a sign of youth and vitality. It will increase your confidence, create a great first impression and even make you feel younger.  And of course, smiling and laughing are expressions of joy and you want to be able to indulge in them without feeling insecure!

However, teeth whitening at home is not without risk.  Some home kits don’t contain enough of the whitening product to be effective. The strips may not fit properly allowing the bleaching gel to leak out onto your gums and cause sensitivity or blistering.   So it is important to do your homework before purchasing a teeth whitening product.

And that’s just what we’ve done for you here in this review of Crest 3D White Whitestrips Whitening and Therapy Dental Whitening Kit.

A Brief Overview Of Crest 3D White Whitestrips and Therapy Dental Whitening Kit


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  • Removes up to 6 years of staining
  • Contains enamel strengthening serum to nourish teeth
  • Advanced Seal Technology ensures a good fit and no slipping
  • Uses the same enamel-safe teeth whitening ingredients dentists use
  • Gentle on sensitive teeth


  • Lower concentration of bleaching agent can mean slower or less significant results.

Crest 3D White Whitestrips and Therapy Kit provides a two step process to a whiter and stronger smile.  The Whitestrips gently remove 6 years of stains and the serum nourishes teeth and strengthens enamel.  And Crest Advanced Seal Technology’s no slip grip minimizes risk of any leakage of the gel and even means you can talk and drink water while whitening.

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5 things you need to know about Crest 3D White Whitestrips and Therapy Dental Whitening Kit

1. Does Crest 3D White Whitestrips and Therapy Dental Whitening Kit work?

As with all whitening strips, they utilize a bleaching agent called hydrogen peroxide. The hydrogen peroxide is delivered to the core of the tooth, bleaching away up to 6 years of staining and discoloration.  The difference with Crest 3D White Whitestrips and Therapy Dental Whitening Kit is that the enamel serum ensures your teeth enamel stays strong giving you added confidence (view details).

And this is on top of the fact that Crest use the same enamel-safe teeth whitening ingredients used by dentists.  Also, even people with sensitive teeth can use them as they are specially formulated for this purpose. Do they work?  Yes they do.

If you follow the instructions correctly, Crest promises to take the brilliance of your smile to a new level in only 14 days.  And it retails at around $30 compared to a professional in-office treatment that can easily cost $500+. For added convenience, Crest’s Advanced Seal technology holds the whitening strips securely in place, meaning you can move around talk and even drink water during application.

2. Is Crest 3D White Whitestrips and Therapy Dental Whitening Kit safe?

All Crest 3D White Whitestrips use the same enamel-safe whitening agent that dentists use.

However, it is possible to experience some mild irritation if you have sensitive teeth.  This is usually temporary and can be helped, or even avoided, by using a specialist toothpaste for sensitive teeth before treatment.  In any event, the bleaching agent will not damage your teeth when used as directed.  And remember, Crest 3D White Whitestrips Whitening and Therapy Dental Whitening Kit are specially formulated for sensitive teeth and offer the added benefit of a serum that strengthens your own enamel.

If you do have very sensitive teeth you may wish to opt for Crest 3D Gentle Routine Whitestrips which are even more gentle on teeth and gums.  As always, consult your dentist before starting a new treatment.

3. How soon can you expect results?

Crest 3D White Whitestrips and Therapy Dental Whitening Kit should be used daily for 14 days, not as one off treatments.  Some users report noticeable results after the first application.  Full results should be achieved after the 14 day period if you follow the instructions properly. And Crest offer a whiter smile or money back guarantee.

It is important to remember that not everyone will get identical results with teeth whitening kits.  A number of factors like age, how much tea, coffee or red wine you drink and whether or not you smoke will impact on results.  We provide tips later for you to maximize on your investment and get the best possible results for you.

Also, do bear in mind that whitening products will alter the color of not crowns, caps, veneers or fillings.  If you have any of these you may end up with a mismatch between them and your natural teeth.

For best results, always consult your dentist who can guide you to the best product for your teeth.

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How to use Crest 3D White Whitestrips and Therapy Dental Whitening Kit

  • Peel the upper strip from the liner
  • Apply the gel side to your upper teeth, following the gumline. Press gently for good contact and fold the rest of the strip behind teeth. Repeat for lower teeth.
  • Leave on for 30 minutes – you can drink water and talk without any slippage
  • Remove the strips by simply peeling off and discard
  • Brush for two minutes with a pea sized amount of the Enamel Strengthening Serum and rinse.

4. How long will results last?

This very much depends on you.  For example, coffee, tea and red wine are big staining culprits and if you drink a lot of these your results may not be as long lasting. Likewise with smoking. Otherwise, you can expect your results to last up to 12 months.

Four tips to optimize your results

  1.  Avoid staining culprits (especially during treatment period)

These include not only cigarettes, coffee, tea and red wine, but dark sodas, balsamic vinegar and foods containing turmeric (like curry).  During the treatment phase your teeth are more vulnerable to staining so it is essential to give up or cut down on these culprits during this time to get the best possible results.

  1.  Rinse with water

If you do indulge in one of the staining culprits, remember to rinse your mouth out with water straight away to prevent stains from settling in.

  1.  Clean your teeth

A good oral hygiene regime is the key to a beautiful smile.
Remember 2:2.  Brush twice a day for 2 minutes.  Use an electric toothbrush, many have timers to help you brush each area of your mouth for the correct amount of time.  If you experience any sensitivity, use a specialist toothpaste like Sensodyne during the treatment period. Above all, floss to remove build up from those areas that even the best toothbrush cannot reach.  For ultimate results, try water flossing with the Waterpik Whitening Water flosser. It’s fun, effective, and helps to maintain a dazzling smile.

  1.  Visit your dentist regularly

Who better to help you maintain a great smile than a person who is trained to do it? Keep up your regular 6 monthly check-up and you’ll be able to maintain a white, bright and healthy smile all year round.

5. Is there anything better?

Crest 3D White Whitestrips Whitening and Therapy kit is a great choice, especially for those with sensitive teeth. However, not all whitening solutions are right for everyone.

If you don’t have sensitive teeth and want longer-lasting results, try the Crest 3D White Whitestrips With Light Kit for results that last 36+ months.

Crest 3D Whitestrips with Light, Teeth Whitening Strip Kit, 20 Strips (10 Count Pack)
  • Crest's best and fastest whitening technology at home
  • A lightweight, disposable, water resistant, handheld device that weakens stains
  • When used as directed, Crest Whitestrips with Light whitens dramatically better than strips alone

If you have significantly crooked teeth, try a gel whitening kit like Opalescence Go whitening kits which allow for the bleaching agent to seep in and around teeth.

Opalescence Go 15- Prefilled Teeth Whitening Trays - 15% Hydrogen Peroxide - (10 Treatments) Made by...
  • PREFILLED TEETH WHITENING TRAYS 15%: 20 trays (10 for the top and 10 for the bottom) for a total of 10...
  • OPALESCENCE TEETH WHITENING: Easy to use, no LED light needed or recommended. With over 30 years of expertise,...
  • 15% TEETH WHITENING KIT: Whitens teeth chemically using Hydrogen Peroxide Gel with prefilled trays for...

Or, if you really don’t have much time to spare, try a whitening pen like the Philips ZOOM! whitening pen.

  • 1 Pack set of 2 Pens

What’s in the box?

A standard Crest 3D White Whitestrips Whitening and Therapy Kit includes:

  • 14 Daily Whitestrip treatments
  • 1 tube enamel strengthening serum

Crest 3D White Whitestrips Whitening and Therapy Dental Whitening Kit ingredients:

Whitestrips: PVP, Water, PEG-8, Acrylates Copolymer, Hydrogen Peroxide (active bleaching ingredient), Sodium Hydroxide, Sodium Saccharin

Enamel Strengthening Serum: Sodium Fluoride 0.243% (active ingredient), Sorbitol and Water, Hydrated Silica, Sodium Lauryl Sulfate, Flavor, Trisodium Phosphate, Cellulose Gum, Sodium Phosphate, Sodium Saccharin, Carbomer. (inactive ingredients)

Is the Crest 3D White Whitestrips Whitening and Therapy Kit worth it?

If you have sensitive teeth or are a little anxious about the home tooth whitening process Crest 3D White Whitestrips Whitening and Therapy Dental Whitening Kit is a smart choice.  The strips are specially formulated for sensitivity and yet they still remove up to six years of staining.  And the inclusion of the enamel strengthening serum will give you the added confidence that you are taking the best possible care of your smile.

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Frequently Asked Questions

Is it possible to just add part of a strip if I have crowns?

Yes the strips can be cut, but do this before you remove the backing.

Does this work on tobacco stains?

It does, but if you continue smoking you may reduce the longevity of your results.

Should I brush my teeth before using the Whitestrips?

The instructions tell you not to do so immediately before whitening.  However, if you have sensitive teeth, brushing an hour or so before treatment with a specialist toothpaste may lessen the chances of any sensitivity.

Are these supposed to reach the back of your teeth?

No – these strips cover teeth that are visible when you smile and are not designed to reach right to the back of the mouth.

Can I use them even if I don’t have straight teeth?

Yes, stick the strip to your middle front teeth first and then smooth on to the teeth either side following the contour of each tooth.  However, if your teeth are very misaligned, try Crest 3D White Whitestrips Supreme Flex-fit.

Are they artificial sweetener free?

Crest 3D White Whitestrips contain Sodium Saccharin.

I have a built-in retainer on the inside of my top teeth.  Can I use these strips over the retainer?

Yes. I it doesn’t affect how they go on and stay.

What does it taste like?

It is slightly minty, like a toothpaste.

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Last update on 2024-06-25 / Affiliate links / Images from Amazon Product Advertising API

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