Fairywill Teeth Whitening Kit Vs. Crest 3D Whitestrips

Whitening my teeth is somewhat of a beauty self-care thing for me. Even though I will have to wear masks everywhere for some time, Having white teeth gives me a self-esteem boost.

A few months ago I had used a teeth whitening kit from Fairywill and did a review on it. Unfortunately, I didn’t feel as though the effects lasted as long as I hoped so I tried Crest 3D Whitestrips. This post will discuss both of the products and give a possible answer as to which one is better.

About teeth whitening

Having white teeth is considered attractive and has been for quite some time- just like straight teeth. The act of getting our teeth white became really popular in the 1980s and is going to be a “thing” for the foreseeable future.

Yellow or dark teeth may give some the idea that you are unhygienic and/or are not healthy. Due to this perception, one may have a difficult time socially and career-wise. It may also make someone feel bad about themselves if they have discolored teeth.

There are many things that cause one’s teeth to turn a yellow or dark color. These include medications, coffee drinking, not brushing well enough, smoking, age and certain foods. Some of the causes can be avoided but then there are also genetic issues that can turn the teeth an undesirable color.

These days there are many ways to lighten the color of one’s teeth. They include using hydrogen peroxide, carbamide peroxide and baking soda. These substances are put on the teeth by way of strips, gels, toothpastes, trays and mouth washes. This is all done either at-home or in office by a dentist.

The cost for teeth whitening can range from $20-$1,000.

About both of the kits

Let’s take a look at the Fairywill and Crest kits!

Fairywill Teeth Whitening Kit

This kit uses a tray method and blue light technology. Blue lights are said to have whitening properties so it is put in with the kit as a result booster of sorts.

The kit includes the following items:

  • Instructions
  • 1 blue LED light
  • 3 syringes with teeth whitening gel
  • 1 BPA-free mouth tray and two mouth trays that conform to your teeth
  • 1 case for a mouth tray
  • 1 small brush to use with the gel if need-be

The type of gel that this kit uses is 35% carbamide peroxide. The difference between this and hydrogen peroxide is that it contains hydrogen peroxide. It also is different in that the teeth whitening effects of it stay working longer than just hydrogen peroxide does.

The company says that the carbamide peroxide they use is less harsh on teeth and gums than hydrogen peroxide is. Because of this the product description states how it does not cause much sensitivity issues.

You are able to use either the regular mouth tray or the the one that can conform to fit your specific teeth.

There is a “pocket” at the front of the trays where the blue light is to be pressed into . The battery in the light is supposed to last a long time before needing to be changed.

To use the product, you are to take one of the gel-filled syringes and squeeze out a little bit of the gel. This is done for the top and bottom of the tray. You then attach the LED light to the tray and press in your mouth. The light is to be turned on by a button that is on the top of it.

You are to keep the trays in your mouth for 30 minutes each time.

The kit provides you with 7-14 days of whitening. During the use of the kit, the company says that you can whiten your teeth by up to seven shades and have it last for 90+ days.

This kit costs $25 on Amazon.

Crest 3D White No-Slip Whitestrips

This kit uses strips to administer the whitening agent onto the teeth. The active ingredient for the whitening is hydrogen peroxide. It also has sodium hydroxide in it which helps the hydrogen peroxide to whiten even better due to its ability to get rid of any deposits that may be on your teeth.

This kit includes the following items:

  • Instructions
  • 2 express whitening strip treatment that whiten in an hour.
  • 22 whitening strip treatments that whiten in 30 minutes.

For the best effects, you are to finish what is in the entire box. This means that you will be using the two hour long treatments along with the 30 minute ones.

To do the treatments you have to wait a while before or after you have brushed your teeth (like a couple hours). You are to peel the strips off the plastic sheets, stretch them out a bit and apply them to your teeth (top and bottom). Crest claims that the whitening will last 12+ months.

The cost of this particular kit is $50.00.

The pros and cons

Each of these kits have their good and bad points. Lets take a look at them.

Fairywill kit


  • The tray is easy to get in your mouth.
  • Doesn’t take very much time per day.
  • Trays are BPA-free which is great.
  • The gel may not be harsh to some.
  • The blue light can be used for other whitening kits.
  • The little brush it comes with can help make sure to get the gel on each tooth better.
  • The price is pretty low for a kit.


  • Although the tray is easy to get in your mouth, it may be too big and slide around.
  • If a little gel gets in your saliva, there may be a bit of a burning sensation.
  • You may get “dud” where the light doesn’t work.
  • You may have a hard time coating the trays properly with the gel and thus not getting an even whitening experience.
  • The tray may be really uncomfortable to some.
  • The gel may be really harsh to some.
  • People may feel its whitening is underpowered.

Crest kit


  • The strips are “no-slip” meaning they do not slip around like other strips do.
  • Crest is a well known brand that has given great results to many people.
  • You are pretty much guaranteed results.
  • Easy to use.
  • Less expensive than whitening done by dentists.
  • The strips conform to the shape of your teeth.
  • The treatments don’t take very much time per day.
  • The whitening last at least 6 months


  • Some may find the gel to be harsh on their teeth and gums leading to stinging.
  • May not whiten evenly if you don’t line the strips up right.
  • The whitening may not last for 12 months as the box states. So if you are looking for only a once a year treatment, this may not be for you.
  • More expensive than some other whitening products on the market.

Which one wins?

This question is hard to answer as everyone is different and will have different experiences with these two kits. That being said, one of them should be up higher on the list of kits to try. That kit is *drum roll*

Crest 3D Whitestrips!

While the Fairywill kit is okay, the Crest 3D Whitestrips boasts more love behind it from even dentists themselves. It also seems like the effects may last longer just going by the countless reviews on both of the kits.

Since blue light really does have whitening powers, it may be even more powerful to combine both the light and the strips in one treatment. Fortunately, one would not have to buy the two different kits as Crest carries a whitening treatment product that comes with a blue light as part of the treatments.


My experience with Crest 3D Whitestrips

Even though I did see results from the Fairywill kit, they only lasted about two months. This was a little disappointing to me so I decided to try Crest 3D Whitestrips recently.

I was pleasantly surprised as to how they fit on my teeth and did not slide around. A few years ago I tried to do one of their kits and the strips kept moving around. It was so annoying to me that I don’t think I ended up finishing it.

Because of the strips fitting so well, I actually enjoyed using them. In my opinion they are much more comfortable than the mouth tray that the Fairywill kit has.

I am now sitting here with super white teeth and I couldn’t be happier about it. My hope is that it lasts for around six months or even more.

In conclusion

These are both good products but Crest’s 3D Whitestrips has the upper hand in this comparison. It is ultimately up to you when it comes to figuring out which one to buy though.

What teeth whitening product have you used and liked?

September 2021 update: You can find the Crest Whitestrips here.

Thanks for reading!

#crest #crest3dwhitestrips #fairywillteethwhitening #teethwhitening #bestteethwhitening #bestwhiteningtoothpaste #dentists #beauty #selfcare


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