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Dental Health Care and Dental Hygiene Products

The Onion Test


Ready to begin the Onion Test.

The bad breath from that cheeseburger with extra onions you had for lunch will linger for hours — if you let it. Nobody wants bad breath, that's why big-brand dental product companies spend millions of dollars each year trying to sell you their breath-freshening products.

Problem is, most of these heavily advertised products simply hide mouth odors — or worse yet, compound the problem — with short-lived flavor additives, dyes and moisture-robbing alcohol. Alcohol is also the reason many mouthwash products sting or burn your mouth.

To prove Oxyfresh is superior, we conducted the Onion Test. How does a leading brand-name mouthwash compare against Oxyfresh Mouthrinse when you mix them with a chopped onion?

The Set Up


The Onion Test with mouthrinse added.

Here’s what we used:

First, we diced the onion into ¼-inch pieces. Then we placed half of the chopped onion in each container. Finally, we added enough of each mouthrinse to cover the onion in the containers, sealed them and let them sit overnight.

The Results Don't Lie


The results of the Onion Test.

The Sights:
Before even opening the jars, we noticed that the dyes from the leading brand-name mouthrinse had penetrated the onion, staining it. The Oxyfresh jar was still bright white.

We also noticed that the onions in the leading brand-name mouthrinse shrank and dried out due to the alcohol contained in this rinse.

The Smells:
We opened the Oxyfresh jar first. Upon opening, there was a fresh, minty scent, with little to no onion smell at all.

We weren't ready for the smell that came out of the other mouthrinse jar. A stench of onions, alcohol, and mint all fighting for attention in our poor nasal passages. We were glad we opened the Oxyfresh jar first because once this foul Pandora's Box had been opened, it was hard to "un-smell" it.

The Secret Weapon: Oxygene®


A sulfur compound is oxidized by Oxygene®

Oxyfresh uses its very own formula to fight bad breath by safely attacking and neutralizing volatile sulfur compounds (VSCs), the rotten-smelling bacterial by-products mainly responsible for bad breath. Most commercial mouthwashes use alcohol — nearly 30 percent by volume in some cases — to kill the bacteria. But is that the answer?

"The use of alcohol in mouthwashes is an ironically poor choice," says Tony Stefanou, DMD, a New York City dentist. "VSCs result from dead bacteria and epithelial cells. When alcohol is used to 'kill the germs that cause bad breath' as touted by nationally advertised mouthwashes, those products may be fueling the carrier of bad breath by producing more dead bacteria!

"Oxygene®, Oxyfresh's long-lasting oxidizing compound, safely neutralizes these odor-causing germs and bacteria through an oxidation process," explains Stefanou.

Oxyfresh uses this signature solution in its concentrated, low-abrasion (gentle on tooth enamel) toothpastes and alcohol-free mouthrinses, as well as in body deodorizers and cleansers, skin gels, shampoos and oral additives for pets.

So what are you waiting for? Oxyfresh Mouthrinse with Oxygene® is truly the best defense against bad breath. It won't just cover up odors with strong mint fragrances, it will safely destroy odor at its source. That's the Oxyfresh difference.