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Smile Avenue Review of the Teeth Whitening Kit and Whitening Strips

Natalie Asmussen
Natalie Asmussen
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This is a Smile Avenue review of the teeth whitening kit, whitening strips, and floss.

We took a close look at the whitening kit and the ingredients used in these products to figure out whether they would be successful in whitening teeth.

Overall, we found Smile Avenue to be a good product for whitening teeth, both the kit and the whitening strips. That's largely thanks to the active ingredient of carbamide peroxide in the kit, and hydrogen peroxide in the strips.

In this article, we will cover the following:

  • Review of Smile Avenue kit, strips, and floss
  • Smile Avenue Whitening Kit contents
  • Cost of Smile Avenue

So keep reading to find out if this is the best teeth whitening option for you!

If you're short on time, check out the table below for a summary of the Smile Avenue Whitening Kit to see if it has everything you need.

Product image

Active ingredient

Main kit contents



34% carbamide peroxide

  • 3 gel pens

  • 1 desensitizing pen

  • 1 LED light

Smile Avenue Teeth Whitening Kit

How does the Smile Avenue kit work?

The Smile Avenue kit whitens teeth with a powerful whitening formula that contains 34% carbamide peroxide — that's as strong as you would get from the dentist.

This whitening formula is dispensed into an LED light mouthpiece which you place between your teeth while you whiten.

smile avenue whitening kit
Smile Avenue Teeth Whitening Kit

This kit also comes with a desensitizing gel pen, which you can apply to teeth before and after you whiten, to help combat any sensitivity you may feel during and after the whitening process.

It is easy to charge with a micro-USB plug, and three connectors — USB, USB Type-C, and Lighting for iPhone — have got you covered.

The full contents of the whitening kit are:

  • 3 x Smile Avenue Gel Pen
  • 1 x Desensitizing Gel Pen
  • 1x Smile Avenue LED Light with micro-USB plug
  • 3 connectors: USB, USB Type-C, Lightning (iPhone)
  • 1x Smile Avenue shade guide
  • 1x Smile Avenue Velvet Pouch
  • 1 x User manual with instructions

The full list of ingredients for the whitening gel are:

Carbamide peroxide (34%), Glycerol, Propylene Glycol, Deionized Water, Carbomer, Carboxymethyl, Triethanolamine, Poly Vinylpyrrolidone, and Menthol.

You can order your Smile Avenue Whitening Kit now, and use code DENTALY15 to get 15% off your purchase.

Does Smile Avenue work?

Yes, Smile Avenue does work, thanks primarily to its active ingredient being proven to whiten teeth. Carbamide peroxide has been shown in many studies to whiten teeth and is often used by dentists in take-home whitening products.

This study, for instance, from the Journal of Physics, shows that formulas with 10% and 15% carbamide peroxide were effective in whitening teeth against extrinsic staining by coffee after seven days. After 14 days, a more significant difference was noticeable with the higher concentration.

This article by researchers in Spain compared studies and literature available across scientific databases on the effectiveness of peroxide and found that both hydrogen peroxide and carbamide peroxide are effective in whitening teeth and that carbamide peroxide may cause less sensitivity.

The following video explains how carbamide peroxide and hydrogen peroxide work and compare to one-another in the teeth whitening process.

In this video, we will talk about external tooth bleaching, with a focus on the differences between hydrogen peroxide and carbamide peroxide. Support me on Patreon! ➤ ➤ Reward perks include access to the slides from all of my NBDE Part II videos, board exam practice questions, and more! Donate to me via PayPal! ➤ ➤ If you are interested in having access to the slides from all of my NBDE Part II videos to take notes on and study from, please donate $30 to me via PayPal and include your email so I can send them to you! Like us on Facebook!   ➤    Check out these great study resources for the NBDE Part 2!      ➤ Mosby's Review Book:    ➤ First Aid Student Guide Book: ➤ Kaplan Lecture Notes Book: ➤ Please note that these are affiliate links which means if you click them and make a purchase, we may receive a small percentage of the sale which helps support the channel.

Do LED lights work?

The LED mouthpiece may also help the tooth-whitening process, although there are less data to back this up — most review articles reference this study to say that LED lights speed up the whitening process.

That being said, you will find dentists who are proponents of using LED lights and those who aren't. The upside is that it's not harmful and may very well speed up the whitening process.

Other Smile Avenue whitening products

Smile Avenue Whitening Strips

smile avenue review
There are also strips and floss

Smile Avenue Teeth Whitening Strips provide a convenient way to whiten your teeth, or maintain your white smile between whitening treatments. Teeth whitening strips don't provide effects that are as strong as a whitening kit, or professional whitening, but if they contain an active ingredient proven to whiten teeth then they do produce results.

The active ingredient in Smile Avenue strips is 6% hydrogen peroxide. We've already established that hydrogen peroxide has been proven to be an effective teeth whitener. Whitening strips typically have hydrogen peroxide between 6% and 14%, and studies like this one have shown that 6% hydrogen peroxide strips are effective.

With the Smile Avenue Whitening Strips, you get 28 strips in total, divided into 14 individual packets containing 2 strips each: 1 for the upper teeth, and another for the lower teeth.

The full list of ingredients for the Smile Avenue Whitening Strips are:

K30, Glycerin, Hydroxypropylcellulose, K90, Aqua, Hydrogen Peroxide, Coconut Oil, Menthol.

When you purchase the Smile Avenue Whitening Strips, use code DENTALY15 to get 15% off your order.

Smile Avenue Floss

From an oral health perspective, the Smile Avenue Charcoal Floss is the most important product in this review! We understand that flossing your teeth isn't nearly as glamorous or sexy as whitening them, but it is an essential part of your daily oral hygiene routine, so we're grateful that Smile Avenue has included floss in their offering.

This floss is infused with activated charcoal and includes 50 meters to each spool. While there aren't many studies documenting the effectiveness of charcoal-infused floss in whitening teeth, if it gets you flossing on a regular basis, that's all that matters! Just add it to your basket along with your whitening products and you'll make your dentist proud.


Smile avenue whitening
Get whiter teeth for less, at home

Smile Avenue offers a teeth whitening kit, whitening strips and floss. The teeth whitening kit features an LED light mouthpiece that may accelerate whitening effects and a whitening gel with 34% carbamide peroxide.

The whitening strips contain 6% hydrogen peroxide, and the floss is infused with activated charcoal, for a potential extra whitening boost.

Smile Avenue has everything you need to effectively whiten teeth:

  • Carbamide peroxide in kit whitening gel
  • Hydrogen peroxide in the strips
  • LED light that may speed up whitening

The activated charcoal in the floss may or may not supply a whitening boost, but it will certainly help you keep plaque levels down between teeth and along your gumline.

We recommend the Smile Avenue Whitening Kit as an effective way to whiten your teeth at home, always keeping in mind that results with at-home kits won't be as noticeable as they would be with professional in-office whitening procedures.

Use code DENTALY15 to get 15% off your purchase of Smile Avenue products.


Does Smile Avenue work?

Yes, Smile Avenue works; the kit's whitening gel contains 34% carbamide peroxide to whiten teeth, and carbamide peroxide is a proven active ingredient in whitening, both in-office and at home.

Do Smile Avenue Whitening Strips work?

Yes, Smile Avenue Whitening Strips contain 6% hydrogen peroxide, which is enough to provide a slight but noticeable whitening effect when used according to package instructions.

Smile Avenue Review of the Teeth Whitening Kit and Whitening Strips
4.3 (86%) 10 vote[s]