Crest Teeth Whitening Strips Reviews

The first thing that people will likely notice about you is your smile. An attractive smile is powerful. It is a direct reflection of how you feel and how you take care of yourself. Discolored teeth can bring down a person's confidence and maybe even cause them to shy away from smiling. Unfortunately, many people cannot afford to have their teeth whitened at the dental office or they are embarrassed to take that first step.

White strips are an affordable, simple option for those looking to brighten their smile without having to fork out hundreds of dollars at the dental office. It's an option that allows patients to whiten their teeth conveniently at home. Crest is one of the most popular whitestrips brands and they've got a wide selection of white strips to suit different needs. Continue reading for a look at our Crest white strips reviews and other valuable information.

Compare Crest Teeth Whitening Strips

Crest 3D Kit


Treatment Period

# of Strips Included

Application Time

Peroxide Concentration

Professional Effects

  20 Days


30 Minutes


Supreme Flexfit

21 Days


60 Minutes


1 Hour Express

7 Days


60 Minutes


Gentle Routine

14 Days


30 Minutes



14 Days


30 Minutes


What are Crest Teeth Whitening Strips?

Crest is a P&G brand offering whitestrips that consist of whitening-gel coated strips that are easily placed on the teeth along the gum line. They are left on for a certain period of time while the gel works to whiten on the surface and deep within the enamel. They are then discarded and the application is repeated once per day for a specific treatment period.

Crest Teeth Whitening Strips Ingredients

Ingredients can be different for each kit Crest has to offer but the common whitening ingredient in Crest white strips is hydrogen peroxide. This is the same ingredient used by dentists to whiten teeth professionally. It is an enamel-safe and effective whitening ingredient.

Other ingredients Crest uses in the whitening gel may include:

  • Water - prevents carbomer from dehydrating teeth
  • Glycerin - a humectant that helps gel to become sticky and adhere to teeth
  • Carbomer - also helps with adhesion
  • PVP - adhesive polymer
  • PEG - a humectant that thickens gel
  • Acrylates copolymer - keeps the strip in 1 piece during use
  • Sodium hydroxide - for pH balance
  • Sodium Saccharin - for taste
  • Pyrophosphate - (in Crest stain shield only) protects against tartar

Look on the package for exact ingredients or scroll down for this information in the reviews.

Are Crest Teeth Whitening Strips Safe?

The whitening ingredient, hydrogen peroxide, is considered to be enamel-safe and is also used by dentists. Crest formulated their whitestrips to be safe if used according to their instructions.

It is common for the strips to cause gum irritation and teeth sensitivity. This sensitivity should be temporary but it's always best to seek the opinion of your dentist regarding sensitive teeth.

Crest Teeth Whitening Strips Instructions

  • It is not advisable to brush teeth before using white strips.
  • Open the packaging and peel the liner from the strip.
  • Place the gel-side of the strip on your upper teeth along the gumline. Apply gentle pressure and fold the rest of the strip behind your teeth.
  • Repeat for lower teeth as well.
  • Wear the strip for as long as the instructions indicate. This can be different for each kit.
  • Remove and discard the strips.
  • You can brush teeth after if desired.
  • Repeat daily for the treatment period specified. This can also be different for each kit, which is why it is very important to read instructions thoroughly.

For more detailed instructions on how to use teeth whitening strips click here.

Do Crest White Strips Work?

Hydrogen peroxide is an effective whitening ingredient. This is the ingredient that Crest uses in their white strip kits. Each Crest kit uses a different concentration of hydrogen peroxide. If the Crest whitestrips are used according to the manufacturer's instructions, you should see a difference.

For one reason or another, Crest white strips have not worked for everyone. If a consumer is unhappy with the results, Crest suggests they try 2 boxes of whitestrips to treat tough stains or take them up on their 'satisfaction guarantee' on their website.

5 of the Best Crest White Strips: Reviews

Crest 3D White Professional Effects Whitestrips seem to be a customer favorite. Many would consider these to be the best Crest whitening strips on the market. They whiten at a professional treatment level and should last 12 months or more.

The package contains 40 strips, which works out to 20 treatments (20 days). They should be used daily for the whole treatment period to get the best results with an application time of 30 minutes. These strips have advanced seal technology which allows them to fit well to the shape of your teeth and they should stay in place no problem.

Ingredients: PVP, PEG-8, Water, Hydrogen Peroxide 9.5%, Acrylates Copolymer, Sodium Hydroxide, Sodium Saccharin


  • Removes up to 14 years of stains
  • Advanced Seal Technology - molds to your teeth
  • No-slip grip so they stay in place even if you need to have a drink of water during treatment


  • Do not expect same-day results. Teeth gradually whiten over the treatment period.

Crest 3D White Supreme Flexfit whitestrips kit whitens like a $500 professional laser treatment. The whitening effect can last 18 months or more and only needs to be applied for 1 hour per day for a treatment period of 21 days. What's unique about these strips is they utilize flexfit technology which allows them to stretch and cover up to 30% more of your smile.

Out of these 5 Crest kits you are likely to achieve the most dramatic results with this Flexfit kit due to the long treatment period and application time as well as the hydrogen peroxide concentration.

Ingredients: PVP, PEG-8, Water, Hydrogen Peroxide 10%, Acrylates Copolymer, Sodium Hydroxide, Sodium Saccharin


  • The coverage is greater than regular, non-flexing strips.
  • Long-lasting professional level whitening treatment.
  • Advanced Seal Technology


  • Can cause teeth sensitivity due to the peroxide content.
  • Need to remove the strip from the liner carefully as some people end up doing so incorrectly resulting in the strip not being sticky enough.

Crest 3D White 1-Hour express can remove years of stains in only 1 hour and last 9 months or more. They are the quickest option offered by Crest for a whiter smile. In the package are 14 strips (7 treatments). They use Advanced Seal, no-slip technology which keeps them in place so that you can remain active and even drink water during use if you need to.

Ingredients: PVP, PEG-8, Water, Hydrogen Peroxide 10%, Acrylates Copolymer, Sodium Hydroxide, Sodium Saccharin


  • Very quick teeth-whitening option.
  • The strips are able to have a good grip on the teeth.
  • Cheaper than other Crest kits.


  • There is a strong chance of experiencing sensitive teeth due to the high level of whitening.
  • Crest whitestrips only whiten natural teeth.

Crest 3D White Whitestrips Gentle Routine contain 28 treatments. It is a longer treatment period because of the lower percentage of hydrogen peroxide. Lower concentrations of peroxide are easier on the teeth in terms of sensitivity. So if you do have teeth sensitivity, you may want to give these a try if other types of whitening strips have been too much to handle in the past.

Ingredients: PVP, Water, PEG-8, Acrylates Copolymer, Hydrogen Peroxide 5.25%, Sodium Hydroxide, Sodium Saccharin


  • If you have sensitive teeth, this is a great option for you to try out when other kits have caused too much sensitivity due to the higher peroxide levels.
  • You only have to apply the strips for 30 minutes. Other kits can have an application time of up to 2 hours.
  • Unlike whitening toothpastes, white strips remove stains beneath enamel surface.


  • Takes a longer period of time to achieve full teeth whitening results.
  • These strips can still cause teeth sensitivity in some people who are highly sensitive.

Crest 3D White Glamorous strips can remove up to 10 years of stains caused by coffee, wine and smoking. These have the same treatment period and application time of the gentle routine white strips but with a higher percentage of peroxide so you will see more whitening with Glamorous white. They also have no slip grip which makes a big difference when applying them because you don't want to have to fiddle around with them during the application.

Ingredients: PVP, PEG-8, Water, Hydrogen Peroxide 9.5%, Acrylates Coplymer, Sodium Hydroxide, Sodium Saccharin


  • The strips remove years of stains.
  • It's possible to see a whiter difference after using it for only a few days.
  • You can be productive while using the strips.
  • These strips make the whole process of whitening teeth affordable.


  • Some people who purchased the product complained that it dries out their mouth.
  • A few consumers find the product a little pricey for an at-home kit.


Many consumers have been successful with Crest whitestrip kits and are now experiencing a whiter smile as a result. As you can see they offer a range of whitening kits for consumers with different needs such as teeth sensitivity, express whitening, large coverage, etc. Crest whitestrips are a safe, effective teeth whitening option. Hopefully our Crest teeth whitening strips reviews have helped you to narrow down your choices.

Looking for reviews of other whitening strip kits on the market? Check out our top 5 white strip choices here.

Aurora is the lead editor here at She is one of those people who actually likes going to the dentist. She loves to write about anything health related, but oral health is her most passionate topic. Her free time is spent partaking in family activities and experimenting in the kitchen.

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