Chlorine dioxide mouthwash has earned a serious reputation among dentists and fresh-breath fans alike. But here's what most people don't know: the technology is only as good as the formula behind it.
That's why Oxyfresh created Oxygene® — a proprietary, patented active ingredient built on stabilized chlorine dioxide technology and engineered for 24/7 fresh breath. Read on to find out why dentists love this ingredient ... and why once you try Oxygene®, you'll never go back.
What Is Chlorine Dioxide — and What Makes Oxygene® Different?
We get it: chlorine dioxide isn't exactly a warm-fuzzy name. Maybe you're thinking, "Is that like bleach or what gets dumped into a pool?" The short answer is no. (If you want the long answer, check out this article: the differences between chlorine and chlorine dioxide.)
While both chlorine and chlorine dioxide are oxidizing agents (an agent that "accepts" or "removes" electrons from other agents), their chemical structures and behaviors are completely different. Unlike chlorine, which is highly reactive and corrosive, chlorine dioxide is a safe, environmentally friendly disinfectant agent — used in many public drinking water systems to purify water of fungi, viruses, and bacteria while deodorizing it.
Oxygene® is Oxyfresh's proprietary active ingredient built on that same stabilized chlorine dioxide technology — refined, patented, and optimized specifically for oral health. Think of chlorine dioxide as the foundation. Oxygene® is what you build on top of it when you've spent 40 years obsessing over the perfect formula.
How does Oxygene® work in mouthwash?
Via the gentle process of oxidation, Oxygene® neutralizes Volatile Sulfur Compound (VSC)-producing bacteria — and that matters because VSCs are the primary cause of bad breath.
Oxygene® is also renowned for its ability to easily penetrate, remove, and prevent biofilm (plaque). Plaque is the starting point of common dental issues like gingivitis, the earliest stage of gum disease. With 75% of adults displaying signs of gingivitis, using a mouthwash powered by Oxygene® is a simple way to keep plaque and tartar buildup under control — protecting your smile and your bank account down the road.
What if you accidentally swallow mouthwash with Oxygene®?
Just to be clear, we 100% don't condone drinking mouthwash — but if you were to accidentally swallow a little, there's no need to worry. Because Oxygene® is built on stabilized chlorine dioxide technology, it's non-toxic and safe. (Please note: any mouthwash containing fluoride can cause stomach upset if you swallow too much.)
Alcohol mouthwash, on the other hand, can be worrisome if swallowed because of its high alcohol content (around 26.9%). This is especially a concern for children, as even 1 ounce of ethanol can cause intoxication or poisoning — which is why the ADA recommends children under six forego mouthwash altogether, and why you'll want to keep those bottles well out of reach.
Thinking about a DIY hydrogen peroxide mouthwash? Hydrogen peroxide mouthwash side effects include vomiting, nausea, and burning of the digestive tract if you swallow too much. YIKES.
5 Reasons Dentists Recommend Chlorine Dioxide Mouthwash — And Why Oxygene® Is the Gold Standard
Not all chlorine dioxide mouthwashes are created equal. Here's what the technology delivers — and how Oxygene® takes every benefit to the next level.
1. Better Long-Term Breath Control
People with halitosis (chronic bad breath) have a lot to be excited about when it comes to mouthwash powered by Oxygene®.
In a randomized study on stabilized chlorine dioxide mouthwash, participants who swished two times a day experienced over 196% improvement in breath freshness after eight weeks, as measured by three calibrated organoleptic judges.
Participants' breath was measured at baseline (0.224) as well as weeks six, seven, and eight. From week six (0.120) to week seven (0.004) to week eight (0.0002), detected odor steadily declined — suggesting that long-term use of an Oxygene®-powered mouthwash has real, compounding benefits for overall breath management. And remember — an unflavored formula was used in the study. No masking with mint. Just the science doing its thing.
2. It Won't Dry Out the Mouth Like Alcohol
Unbeknownst to them, people often find themselves in a vicious cycle of bad breath when they use alcohol mouthwash. That's because alcohol is a drying agent. A dry mouth encourages the rapid growth of Volatile Sulfur Compounds — so while there's an initial (yet burning) blast of freshness, once the dryness kicks in, VSCs form and your breath goes right back to square one.
Oxygene® has zero drying effect. No burn, no rebound bad breath, no vicious cycle. Just clean, comfortable freshness that actually lasts.
3. Same Purifying Power as CHX ... Minus the Side Effects
For patients with severe gum disease, chlorhexidine (CHX) mouthwashes are often prescribed following oral surgeries to control bacteria, inflammation, and swelling. The problem? CHX isn't designed for long-term use — it causes teeth staining and tartar buildup, and because it tastes terrible (often described as a lingering metallic taste), many patients simply don't follow through on post-op care.
That's why many dentists have made the switch to Oxygene®-powered mouthwash. Oxygene® is tasteless, odorless, safe for long-term daily use, and actually controls tartar rather than contributing to it — all while delivering the same purifying power as CHX, without the drawbacks. In a four-month aerosol study, Oxyfresh Fresh Breath Lemon Mint Mouthwash was proven just as effective as CHX as a pre-procedural rinse for reducing bacterial count. Gold standard status, confirmed.
4. Freshens Breath, Fast
When Oxygene® encounters Volatile Sulfur Compounds — the molecules behind stinky breath — it works on contact to render them inactive. Unlike mouthwashes that try to cover up bad breath with strong menthol and masking agents, Oxygene® tackles the problem right at the source. Just 60 seconds of swishing sends those VSCs packing and instantly freshens your breath. No tricks, no cover-ups. Just results.
5. Amazing Plaque Fighter
Plaque is that sticky stuff that forms on your teeth after you eat. Left unchecked, it hardens into tartar and causes problems with the gums while encouraging decay. Chlorine dioxide technology is already well-regarded for cutting through plaque and tartar — and Oxygene® brings that benefit to its highest form, providing a superior level of clean versus anything else in the mouthwash aisle.
What's the Best Chlorine Dioxide Mouthwash? (Hint: It's Powered by Oxygene®)
If you've been searching for a chlorine dioxide mouthwash, you've found something better: Oxyfresh, the brand that pioneered this technology for oral care all the way back in 1984. Every Oxyfresh mouthwash is powered by Oxygene® — our proprietary, patented active ingredient that takes stabilized chlorine dioxide technology and elevates it into a formula guaranteed for 24/7 fresh breath.
No burning alcohol. No bright-colored dyes that stain teeth. No harsh menthol masking agents. Just clean, proven, results-driven freshness — the kind dentists have been recommending for decades.
And we've got the clinical data to back it up. In a double-blind study (NOT sponsored by Oxyfresh), Oxyfresh Fresh Breath Lemon Mint Mouthwash & Toothpaste went head-to-head against a leading store brand with alcohol. Fifty patients with periodontal disease were given a deep clean and split into two groups — one using the Oxyfresh Lemon Mint duo for 12 months, the other using the store brand.
Results after 12 months:
Oxyfresh Lemon Mint Mouthwash & Toothpaste (powered by Oxygene®)
- 76% improvement Gingival Index (measures gum health)
- 79% plaque reduction
- 44% reduction in bad-breath bacteria
Store Brand Alcohol Mouthwash & Toothpaste
- 70% improvement Gingival Index
- 71% plaque reduction
- 34% reduction in bad-breath bacteria
Better in every single category. That's what the gold standard looks like.
Oh, and did we mention the taste?
With Oxyfresh, you won't find harsh artificial flavors — just natural essential oils for a light, refreshing swish. And for those who are sensitive to or don't like flavorings at all, we offer a completely unflavored formula too. Because the freshness should come from the science, not the flavor.
Which Oxygene®-Powered Mouthwash Will Be Your New Favorite?
Fluoride or fluoride free, mint or no mint — Oxyfresh has a formula for every preference. No matter which one you choose, every swish is backed by Oxygene® technology and guaranteed to deliver fresher breath and a healthier smile.
Fresh Breath Lemon Mint Mouthwash (Fluoride Free)
Our most popular formula of all time — and it's easy to see why. With a refreshing blend of aloe vera plus lemon, orange, grapefruit, bergamot, lime, and spearmint essential oils, Fresh Breath Lemon Mint features a patented, max-strength blend of double the Oxygene® and zinc. The gold standard choice for halitosis, dry mouth, or periodontal disease.
Pro Formula Mouthwash (Fluoride Free)
Invested in your smile with whitening or veneers? Pro Formula Mouthwash is formulated to protect delicate cosmetic work — 100% dye free, with zinc, Oxygene®, and just the right amount of natural mint for all-day freshness without the risk of dulling your results.
Cavity Protection Mouthwash (With Fluoride)
Need extra cavity protection or help with sensitivity? Cavity Protection Mouthwash pairs Oxygene® with non-staining neutral sodium fluoride — the same ingredient dental pros rely on — to strengthen enamel, fight cavities, and soothe sensitivity.
Fresh Breath Fresh Mint Mouthwash (Fluoride Free)
Light, airy, and gentle enough for the whole family. Fresh Breath Mouthwash delivers Oxygene® freshness with just a hint of natural farm-grown mint — no explosion feeling, just a calm, clean swish that works.
Gentle Formula Unflavored Mouthwash (Fluoride Free, Flavor Free)
No mint, no sweeteners, no drama. Gentle Formula Mouthwash is pure Oxygene® technology in its most stripped-back form — a must for anyone with flavor sensitivities, or those undergoing chemo or radiation treatments who need a soothing, non-irritating rinse.
Ready to experience the gold standard for yourself? Try an Oxygene®-powered Oxyfresh mouthwash today. We know you'll love the difference.
