Frequently asked questions
Frequently asked questions
Shipping and Delivery
How much does delivery cost?
We offer a flat rate shipping of 8.49 EUR for all countries.
Import duty, VAT and Customs Fees Orders are shipped from our fulfillment centers located in Europe.
European Union – If your order is for a country in the European Union, you will NOT pay any import duty, VAT or customs fees on delivery.
Other EU countries – If your order is for a country in Europe, but outside European Union, you might have to pay Import duty, VAT or customs fees depending on your country.
United Kingdom – If your order is for the UK – import duty, VAT and customs fees are prepaid by us, so you will not pay anything extra.
How do I track my order? When your order has been dispatched you will receive an email with tracking information. Tracking links become active within 1 business day from the day of dispatch.
Shipping countries and delivery times
* Delivery time is indicated in business days.
** We ship within 1 business day from the order date.
How do I change my shipping address? If you have made a mistake with your shipping address, please get in touch with us as soon as possible using the contact us section in our website. Unfortunately, if the order has been dispatched we might be unable to change the address.
Where do you ship from? We work with several fulfillment centers located in Europe, so that we can offer quick delivery to all European countries.
Import duty, VAT and Customs Fees Orders are shipped from our fulfillment centers located in Europe.
European Union – If your order is for a country in the European Union, you will NOT pay any import duty, VAT or customs fees on delivery.
Other EU countries – If your order is for a country in Europe, but outside European Union, you might have to pay Import duty, VAT or customs fees depending on your country.
United Kingdom – If your order is for the UK – import duty, VAT and customs fees are prepaid by us, so you will not pay anything extra.
How do I track my order? When your order has been dispatched you will receive an email with tracking information. Tracking links become active within 1 business day from the day of dispatch.
Shipping countries and delivery times
* Delivery time is indicated in business days.
** We ship within 1 business day from the order date.
| Country | Delivery Time | Carrier |
| Andorra | 13 - 15 days | La Poste |
| Austria | 5 - 6 days | GLS Austria |
| Belgium | 6 - 8 days | Bpost |
| Bosnia Herzegovina | 13 - 15 days | BH Posta |
| Croatia | 3 - 4 days | DPD Croatia |
| Cyprus | 6 - 8 days | Cyprus Post |
| Czech Republic | 3 - 4 days | DPD |
| Denmark | 6 - 8 days | Postnord |
| Estonia | 6 - 8 days | Omniva |
| Finland | 6 - 8 days | Posti |
| France | 4 - 5 days | Colis Prive |
| Germany | 3 - 4 days | Hermes |
| Gibraltar | 17 - 20 days | Royal Gibraltar |
| Greece | 2 - 3 days | ACS Courier |
| Greenland | 6 - 8 days | Greenland Post |
| Hungary | 3 - 4 days | DPD Hungary |
| Iceland | 6 - 8 days | Iceland Post |
| Ireland | 2 - 4 days | Fastway |
| Italy | 4 - 6 days | BRT |
| Latvia | 6 - 8 days | Latvia Post |
| Lithuania | 6 - 8 days | Lithuania Post |
| Liechtenstein | 4 - 5 days | Liechtenstein Post |
| Luxembourg | 3 - 4 days | Luxembourg Post |
| Malta | 6 - 8 days | Malta Post |
| Montenegro | 13 - 15 days | Montenegro Post |
| Netherlands | 4 - 6 days | PostNL |
| North Macedonia | 13 - 15 days | North Macedonia Post |
| Norway | 6 - 8 days | Posten |
| Poland | 3 - 4 days | DPD Poland |
| Portugal | 6 - 8 days | CTT |
| Romania | 2 - 3 days | DPD Romania |
| Serbia | 13 - 15 days | The Post of Serbia |
| Slovakia | 3 - 4 days | DPD Slovakia |
| Slovenia | 3 - 4 days | DPD Slovenija |
| Spain | 6 - 8 days | Seur |
| Sweden | 6 - 8 days | PostNord |
| Switzerland | 5 - 6 days | Swiss Post |
| UK | 5 - 6 days | Royal Mail |
How do I change my shipping address? If you have made a mistake with your shipping address, please get in touch with us as soon as possible using the contact us section in our website. Unfortunately, if the order has been dispatched we might be unable to change the address.
Where do you ship from? We work with several fulfillment centers located in Europe, so that we can offer quick delivery to all European countries.
General questions
Are Crest 3D Whitestrips Safe?
With extensive research and clinical trials, Crest 3D Whitestrips are proven to be safe to use. The Whitestrips uses hydrogen peroxide to effectively whiten your teeth, the same key enamel-safe ingredient used by dentists.
Is It Safe to Use Whitening Toothpaste with Crest 3D Whitestrips? Yes, you can use whitening toothpaste along with Crest 3D Whitestrips to help maintain a whiter smile. The combined amount of peroxide from whitening toothpastes and Crest 3D Whitestrips will not cause any harm.
How do Crest 3D Whitestrips work? Crest 3D Whitestrips are flexible, thin strips coated in a tooth whitener containing peroxide designed to securely conform to the shape of your teeth and keep the tooth whitener in place. The Whitestrips are guaranteed to whiten teeth by removing 10 years of tough, set-in stains.
When will I start to notice results with Crest 3D Whitestrips? Results depend on different factors including your age, how yellow your teeth are and the strength of teeth whitening of the product. (Indicated in levels on the product package). Most people start seeing results after a few uses with full results upon completion. Please bear in mind that if you would like to see the best results you have to buy a full box of the product.
For some products we offer the option to buy less than a box. For example, the product Professional Effects is offered in the following options: 5, 7, 10 and a full box of 20 treatments. This is very useful for people who would like to maintain the level of whiteness and do not need to buy a full box.
How long will teeth whitening last? The length of time your teeth will stay whiter is influenced by several factors, including how often you drink coffee, tea, dark colas, red wine or smoke. After a full course of teeth whitening, the result will be visible for 12 months. It is recommended to use 2-3 treatments each month to maintain the level of whitening throughout the year.
What if I don’t see results after using the Crest 3D Whitestrips? Ensure that you follow recommended usage instructions on the packaging to get the optimal effect. If your teeth are significantly discolored, you may need to use 2 boxes of Crest 3D Whitestrips initially to get the desired result. We also recommend combine with Crest teeth whitening toothpaste for greater results. Please also bear in mind that a small percentage of the population is not affected by the active teeth whitening ingredient hydrogen peroxide. In this case most of the teeth whitening products on the market will not work for you.
Which product is the strongest and offers the greatest teeth whitening? Most of the products have a level of whitening indicated on the box. The higher the level, the stronger the product. The strongest product offers the best teeth whitening experience. Please bear in mind that the strongest products might cause sensitivity so if you have never tried Crest 3D Whitestrips we recommend starting with a lower level.
Is It Safe to Use Whitening Toothpaste with Crest 3D Whitestrips? Yes, you can use whitening toothpaste along with Crest 3D Whitestrips to help maintain a whiter smile. The combined amount of peroxide from whitening toothpastes and Crest 3D Whitestrips will not cause any harm.
How do Crest 3D Whitestrips work? Crest 3D Whitestrips are flexible, thin strips coated in a tooth whitener containing peroxide designed to securely conform to the shape of your teeth and keep the tooth whitener in place. The Whitestrips are guaranteed to whiten teeth by removing 10 years of tough, set-in stains.
When will I start to notice results with Crest 3D Whitestrips? Results depend on different factors including your age, how yellow your teeth are and the strength of teeth whitening of the product. (Indicated in levels on the product package). Most people start seeing results after a few uses with full results upon completion. Please bear in mind that if you would like to see the best results you have to buy a full box of the product.
For some products we offer the option to buy less than a box. For example, the product Professional Effects is offered in the following options: 5, 7, 10 and a full box of 20 treatments. This is very useful for people who would like to maintain the level of whiteness and do not need to buy a full box.
How long will teeth whitening last? The length of time your teeth will stay whiter is influenced by several factors, including how often you drink coffee, tea, dark colas, red wine or smoke. After a full course of teeth whitening, the result will be visible for 12 months. It is recommended to use 2-3 treatments each month to maintain the level of whitening throughout the year.
What if I don’t see results after using the Crest 3D Whitestrips? Ensure that you follow recommended usage instructions on the packaging to get the optimal effect. If your teeth are significantly discolored, you may need to use 2 boxes of Crest 3D Whitestrips initially to get the desired result. We also recommend combine with Crest teeth whitening toothpaste for greater results. Please also bear in mind that a small percentage of the population is not affected by the active teeth whitening ingredient hydrogen peroxide. In this case most of the teeth whitening products on the market will not work for you.
Which product is the strongest and offers the greatest teeth whitening? Most of the products have a level of whitening indicated on the box. The higher the level, the stronger the product. The strongest product offers the best teeth whitening experience. Please bear in mind that the strongest products might cause sensitivity so if you have never tried Crest 3D Whitestrips we recommend starting with a lower level.
LED Light accelerator
How Does The Crest LED Accelerator Light Work?
The Crest LED Accelerator Light is backed by 15 years of advanced whitening technology, and uses the same type of light technology used by dentists. The peroxide in the Crest 3DWhitestrips and Crest Whitening Emulsions whitens hard to reach/tough set-in stains. Then, the blue light further weakens the stains to dramatically boost the whitening results.
How Long Should I Use The Crest LED Accelerator Light? Follow the usage instructions outlined in the package and then turn on and apply the LED Accelerator Light. The LED Accelerator Light will beep to notify you the lights have turned off in case you can’t see it while in use.
What Does It Mean When The Crest LED Accelerator Light Beeps? The Crest LED Accelerator Light beeps to notify you the lights have turned off in case you can’t see it while in use.
Does The Crest LED Accelerator Light Need to be Charged? The Crest LED Accelerator Light is designed with built-in batteries that last the full number of treatments of your whitening treatment package. You do not have to replace the batteries and can discard the device after completing your last whitening treatment.
How Does The Light In The Crest LED Accelerator Light Know When To Turn Off? The Crest LED Accelerator Light turns off automatically after a few minutes once it has delivered sufficient LED light energy to the stains.
How Long Should I Use The Crest LED Accelerator Light? Follow the usage instructions outlined in the package and then turn on and apply the LED Accelerator Light. The LED Accelerator Light will beep to notify you the lights have turned off in case you can’t see it while in use.
What Does It Mean When The Crest LED Accelerator Light Beeps? The Crest LED Accelerator Light beeps to notify you the lights have turned off in case you can’t see it while in use.
Does The Crest LED Accelerator Light Need to be Charged? The Crest LED Accelerator Light is designed with built-in batteries that last the full number of treatments of your whitening treatment package. You do not have to replace the batteries and can discard the device after completing your last whitening treatment.
How Does The Light In The Crest LED Accelerator Light Know When To Turn Off? The Crest LED Accelerator Light turns off automatically after a few minutes once it has delivered sufficient LED light energy to the stains.
Can I use Crest Whitening Products If …
Can I Use Crest Whitening Products if I Have a Cavity or Gum Disease?
We do not recommend using Crest 3D Whitestrips or Crest Whitening Emulsions / Serums if you have an unfilled cavity or gum disease (periodontal disease). Check with your dentist before using any whitening products if you need dental work or treatment for periodontal disease.
Can I Use Crest Whitening Products if I Am Wearing Braces? Crest Whitening Products should not be applied to teeth with braces under any circumstances as they can only whiten the portion of the tooth’s surface that the gel comes into contact with. This will leave an uneven finish, and can also cause oxidation of the metal which will result in discoloration of the braces themselves.
Can I Use Whitestrips When I am Pregnant Or Nursing? There is no evidence that Crest 3D Whitestrips or Crest Whitening Emulsions are harmful to use when pregnant or nursing. However, we recommend consulting with your doctor before use.
Can I use Crest Whitening Products if I have crowns, caps, fillings, veneers, partials, gold, laminates, composite bonding, or other restorations? Crest whitening products will not harm or whiten these types of dental work. Crest whitening products will whiten only natural teeth so if you have any of these on your front teeth, there may be noticeable color differences between the dental work and your whiter teeth. Crest whitening products is designed to whiten only the teeth that show when you smile. So, if you have these types of dental work on your back teeth, color differences may not be noticeable.
Can I Use Crest Whitening Products if I Am Wearing Braces? Crest Whitening Products should not be applied to teeth with braces under any circumstances as they can only whiten the portion of the tooth’s surface that the gel comes into contact with. This will leave an uneven finish, and can also cause oxidation of the metal which will result in discoloration of the braces themselves.
Can I Use Whitestrips When I am Pregnant Or Nursing? There is no evidence that Crest 3D Whitestrips or Crest Whitening Emulsions are harmful to use when pregnant or nursing. However, we recommend consulting with your doctor before use.
Can I use Crest Whitening Products if I have crowns, caps, fillings, veneers, partials, gold, laminates, composite bonding, or other restorations? Crest whitening products will not harm or whiten these types of dental work. Crest whitening products will whiten only natural teeth so if you have any of these on your front teeth, there may be noticeable color differences between the dental work and your whiter teeth. Crest whitening products is designed to whiten only the teeth that show when you smile. So, if you have these types of dental work on your back teeth, color differences may not be noticeable.
Crest Products and Sensitivity
What should I do if Crest 3D Whitestrips are causing sensitivity or gum irritation?
As with any teeth whitening system that contains peroxide, teeth/gum sensitivity may temporarily develop when using Crest 3D Whitestrips. Some people may experience tooth sensitivity or gum discomfort when using this or other whitening products. We recommend changing from everyday use to every second day use to give your teeth time to adjust. If the sensitivity continues, pause for a few days, and then restart the treatment. If the problem persists, discontinue use.
In case of sensitive teeth or gum irritation we recommend using the specially designed strips for sensitive teeth like Sensitive Bright, Sensitive White, Sensitive, Gentle Routine. Or try other products like Crest Whitening Emulsions and Serum which designed for sensitive teeth.
Other factors that may contribute to discomfort are:
A) brushing too hard and or more than twice a day
B) using a hard to medium bristled toothbrush after whitening your teeth.
We recommend using soft-bristled toothbrush or an electric toothbrush with a sensitivity brush head.
In case of sensitive teeth or gum irritation we recommend using the specially designed strips for sensitive teeth like Sensitive Bright, Sensitive White, Sensitive, Gentle Routine. Or try other products like Crest Whitening Emulsions and Serum which designed for sensitive teeth.
Other factors that may contribute to discomfort are:
A) brushing too hard and or more than twice a day
B) using a hard to medium bristled toothbrush after whitening your teeth.
We recommend using soft-bristled toothbrush or an electric toothbrush with a sensitivity brush head.
Safety
What happens if I swallow the strip or some of the gel from the strip?
No adverse effects will result from ingesting the peroxide gel. It will simply pass through your system without causing any damage. However, swallowing large amounts of peroxide can cause nausea and stomach irritation.
I have white spots on my teeth after using the Crest 3D Whitestrips, what should I do? The white spots are temporary. These spots are not harmful and will go away. The white spots are caused by a loss of water from the tooth enamel. This water loss is not harmful and will go away.
Are There Any Side Effects of Using Crest 3D Whitestrips? You may experience tooth sensitivity or gum irritation after using Crest 3D Whitestrips. Make sure to use the product as directed to limit chances of these occurring. In case of sensitive teeth or gum irritation we recommend using the specially designed strips for sensitive teeth like Sensitive Bright, Sensitive White, Sensitive, Gentle Routine. Or try other products like Crest Whitening Emulsions and Serum which designed for sensitive teeth.
I have white spots on my teeth after using the Crest 3D Whitestrips, what should I do? The white spots are temporary. These spots are not harmful and will go away. The white spots are caused by a loss of water from the tooth enamel. This water loss is not harmful and will go away.
Are There Any Side Effects of Using Crest 3D Whitestrips? You may experience tooth sensitivity or gum irritation after using Crest 3D Whitestrips. Make sure to use the product as directed to limit chances of these occurring. In case of sensitive teeth or gum irritation we recommend using the specially designed strips for sensitive teeth like Sensitive Bright, Sensitive White, Sensitive, Gentle Routine. Or try other products like Crest Whitening Emulsions and Serum which designed for sensitive teeth.
Using whitestrips
How do I use 3D Whitestrips?
Avoid brushing immediately before use to minimize the risk of gum irritation. Open the pouch and peel off the backing layer before applying in line with the gum line. Press gently and evenly for a treatment that works all over.
What happens if I miss a treatment in my cycle? It is safe to skip a treatment. This will not cause any negative effect on the teeth whitening process. It is however recommended to stick to your daily use for best results.
Can I reuse an old strip? No, our strips are a one-use product with a carefully calibrated amount of whitening gel on each strip. If you were to re-use a strip, then it would not only be ineffective, it would also be detrimental to your dental hygiene.
If I wear the strips for longer than 30 minutes, will my smile be even brighter? Excessive wear time can result in tooth and gum sensitivity. For best results it is recommended you stick to the stated treatment duration.
When can I brush my teeth when using my strips? For best results, avoid brushing immediately before use.
When can I brush my teeth after using my strips? Brush gently in a circular motion at all times, and if necessary this can be immediately after using your strips.
Can I store my whitestrips in the refrigerator or freezer? Storing Crest 3D Whitestrips in a refrigerator is fine, however, storing them in your freezer is not recommended and will cause them to become fragile, and or brittle.
Will using whitestrips help me to remove smoking stains? Smoking stains can take longer to remove, so patience may be required if you are a longtime smoker. In addition, if you continue to smoke after treatment then your smile will lose its shine much faster.
Can I smoke while wearing whitestrips? This should be avoided as it will dislodge your strips and cause an uneven and ineffective treatment.
Can I use Crest 3D Whitestrips on my back teeth? No, this is not recommended. Whitestrips are designed to fit the upper and lower front teeth only. They are not designed for use at the back of the mouth, and so will frequently come loose during attempted treatments.
Can I cut my Whitestrips into smaller pieces? No, this is strongly unrecommended. If you were to attempt to do this, then we cannot guarantee that the treatment would be effective, or that the damaged whitestrips would stay in place safely.
What happens if I miss a treatment in my cycle? It is safe to skip a treatment. This will not cause any negative effect on the teeth whitening process. It is however recommended to stick to your daily use for best results.
Can I reuse an old strip? No, our strips are a one-use product with a carefully calibrated amount of whitening gel on each strip. If you were to re-use a strip, then it would not only be ineffective, it would also be detrimental to your dental hygiene.
If I wear the strips for longer than 30 minutes, will my smile be even brighter? Excessive wear time can result in tooth and gum sensitivity. For best results it is recommended you stick to the stated treatment duration.
When can I brush my teeth when using my strips? For best results, avoid brushing immediately before use.
When can I brush my teeth after using my strips? Brush gently in a circular motion at all times, and if necessary this can be immediately after using your strips.
Can I store my whitestrips in the refrigerator or freezer? Storing Crest 3D Whitestrips in a refrigerator is fine, however, storing them in your freezer is not recommended and will cause them to become fragile, and or brittle.
Will using whitestrips help me to remove smoking stains? Smoking stains can take longer to remove, so patience may be required if you are a longtime smoker. In addition, if you continue to smoke after treatment then your smile will lose its shine much faster.
Can I smoke while wearing whitestrips? This should be avoided as it will dislodge your strips and cause an uneven and ineffective treatment.
Can I use Crest 3D Whitestrips on my back teeth? No, this is not recommended. Whitestrips are designed to fit the upper and lower front teeth only. They are not designed for use at the back of the mouth, and so will frequently come loose during attempted treatments.
Can I cut my Whitestrips into smaller pieces? No, this is strongly unrecommended. If you were to attempt to do this, then we cannot guarantee that the treatment would be effective, or that the damaged whitestrips would stay in place safely.
