How Chlorine Dioxide Mouthwash Can Help Cure Bad Breath

A lot of people suffer from bad breath. Some to the extent that it impacts normal social interactions – with friends, colleagues and family. But it doesn’t have to be that way!

One way to fight fight bad breath – medical name is halitosis – is to use a chlorine dioxide mouthwash. Although it won’t cure bad oral odor permanently, it will give you a fresh breath for up to 12 hours.

How Does a Mouthwash with Chlorine Dioxide Work?

The bad smell in your mouth comes from a group of substances called Volatile Sulfur Compounds (VSC). VSCs are produced by anaerobic bacterias that feed on food debris (protein leftovers more exactly).

The bacterias are most often found on the back of your tongue, but sometimes also in small pockets between teeth and gum.

Chlorine dioxide (ClO2) is a substance that we humans are using for several different things. Disinfecting water for example. ClO2 can also be used as an active ingredient to eliminate VSCs from your mouth!

So when rinsing your mouth with a mouthwash containing ClO2, it will find and neutralize the Volatile Sulfur Compounds and the bad smell they cause. It’s that easy!

If you want to learn more about how it works and just how effective it is, you can do so from this clinical trial.

Our Top 3 Picks

If you are ready to give this kind of mouthwash a go, please let us recommend what we think are the three best products out there.

  1. CloSYS Original Unflavored Mouthwash

CloSYS Original Unflavored Mouthwash is the #1 best-selling chlorine dioxide mouthwash on Amazon. It has hundreds of positive reviews and comments, and has a 4.5 rating on a scale 1-5.

It kills 99% of the anaerobic bacteria that causes halitosis within seconds, and it’s safe and easy to use.

Be aware that this product is flavorless. That may sound a bit strange, but in fact, this has been much appreciated by most customers. However, if you do want flavor CloSYS also offers the same mouthwash with a mild mint flavor.

Here are just a few of the comments made by Amazon customers:

“I can’t begin to tell you what a drastic improvement this has made in my dental oral health …… my mouth has never felt better.” – Timespent

“this is my ultimate favorite mouthwash” – lise Goodman



  1. TheraBreath Fresh Breath Oral Rinse

TheraBreath Dentist Recommended Fresh Breath Oral Rinse comes in two flavors, mild mint and icy mint.

It has been recommended by dentists and loved by customers for many many years. And for good reason. The TheraBreath mouthwash eliminates the bad-smelling sulfur compounds without the use of alcohol or any artificial flavors for more than 12 hours (yes it has been clinically proven!).

What I really love about TheraBreath is that all their products come with a money-back guarantee. If you’re not completely satisfied you get your money back. Wow!

The Fresh Breath Oral Rinse has a 4.2 rating and more than 4561 reviews on Amazon. Here’s what some of the customers has to say:

“Works super well, good after taste.” – Paige Gladden

“… it totally works!” – JD Lewin


  1. ProFresh Chlorine Dioxide Oral rinse

ProFresh Chlorine Dioxide Oral Rinse is the only mouthwash of the three we recommend that contain “active” chlorine dioxide (ClO2). Because ProFresh has the U.S patent, other manufacturers use precursors or variants to ClO2.

ProFresh claims their product has a superior ability to neutralize the VSCs than other products, while competitors claims to be just as good or better. You could spend hours reading and trying to make up your own mind, OR order a bottle and see for yourself!

It has been clinically proven to reduce 99.9% of the bacteria causing the bad smell.

Customers seems to like it – giving it a solid 4.4 rating. Typical comments look like this:

“Great refreshing mouth rinse. I have used it for a period of time and found it to be effective.. Would recommend it to others.” – Miss C

“This is the only product I’ve found that works very well and I’ve used it for years.” – Violaracer

How to Maximize Your Chance for a Fresh Breath

Before you start rinsing like crazy, you should know that using a chlorine dioxide rinse isn’t the only way to eliminate the smelly VSCs in your mouth.

If you follow the simple steps described below, you will maximize your chance of getting a fresh breath. I really recommend that you follow them vigorously.

  1. Floss your teeth at least twice a day – after breakfast, and before bedtime. Here’s a very popular dental floss.
  2. After flossing, brush your teeth gently but thoroughly (using toothpaste of course). Take your time!
  3. Use a tongue cleaner (also called tongue scraper). This will remove bacteria and food debris from the surface of the tongue. The primary source of the smelly VSCs!
  4. Rinse with one of the three recommended mouthwashes for at least a minute.

Good luck!

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Comments: 1
  1. Sarah Cummings

    Thanks for sharing your top 3 picks! Very helpful for us readers to choose which one is the best since there are lots of products on the market to choose from. :)

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