TheraBreath vs. CloSYS: Which Alcohol-Free Mouthwash Is Best for Sensitive Gums?
By Therabreathstore | Published: 2026-05-29
Category: Product Reviews
Compare TheraBreath and CloSYS alcohol-free mouthwashes for sensitive gums. Discover key ingredients, benefits, and which formula is best for gingivitis and daily care.
If you have sensitive gums, choosing the right mouthwash can feel overwhelming. You want something that fights bacteria without causing stinging or irritation. Two brands often top the list: TheraBreath and CloSYS. Both are alcohol-free and designed for gentle yet effective oral care. But which one truly wins for sensitive gums? In this TheraBreath vs. CloSYS comparison, we break down ingredients, benefits, and real-world performance to help you decide.
Why Alcohol-Free Matters for Sensitive Gums
Alcohol-based mouthwashes can dry out oral tissues and worsen gum sensitivity. For people with conditions like gingivitis, receding gums, or dry mouth, alcohol-free formulas are essential. Both TheraBreath and CloSYS avoid alcohol, but they use different active ingredients to kill bacteria. Understanding these differences is key to finding the best sensitive gums mouthwash for your needs.
Key Ingredient Comparison
The active ingredient in most TheraBreath mouthwashes is Oxygene (a stabilized chlorine dioxide compound), which neutralizes volatile sulfur compounds (VSCs) that cause bad breath. CloSYS relies on chlorine dioxide as well, but with a slightly different formulation that includes a pH-balancing system. Here's a quick breakdown:
| Feature | TheraBreath | CloSYS |
|---|---|---|
| Active Ingredient | Oxygene (chlorine dioxide derivative) | Chlorine dioxide |
| Alcohol-Free | Yes | Yes |
| Flavor Options | Variety of mints and fruity flavors | Unflavored, Mint, and Gentle Mint |
| pH Balanced | Yes | Yes (slightly alkaline) |
| Best For | Bad breath, dry mouth, gum health | Sensitive gums, gingivitis, plaque |
Effectiveness for Gum Health
When it comes to sensitive gums mouthwash, both brands show strong results. TheraBreath's Oxygene technology helps reduce plaque and gingivitis over time. For example, the Healthy Gums Oral Rinse w/ Added CPC - Clean Mint contains cetylpyridinium chloride (CPC), an antibacterial agent that targets gum inflammation. This makes it a solid choice for daily maintenance.
CloSYS, on the other hand, uses chlorine dioxide to break down biofilm and kill bacteria on contact. Many users with extremely sensitive gums report less irritation with CloSYS because its unflavored version has no artificial sweeteners or dyes. However, TheraBreath offers a wider range of flavors, which can make the rinsing experience more pleasant for those who dislike medicinal tastes.
Flavor and User Experience
Flavor tolerance is a personal factor. TheraBreath's TheraBreath Complete Mouthwash, 6-in-1 Benefits, Alcohol-Free, Revitalizing Mint provides a refreshing mint taste without the burn of alcohol. It's designed to leave your mouth feeling clean and invigorated. CloSYS offers an unflavored option that is completely neutral, which some users prefer if they are sensitive to any taste or smell. Both brands are gentle enough for twice-daily use.
Which One Targets Bad Breath Better?
Both brands are excellent for fighting bad breath, but they work differently. TheraBreath's Oxygene directly neutralizes the sulfur compounds that cause odor, providing immediate fresh breath. CloSYS also kills odor-causing bacteria but may take a few seconds longer to work. For chronic bad breath related to gum issues or dry mouth, TheraBreath's targeted formulas—like the Dry Mouth Oral Rinse - Tingling Mint—offer additional moisturizing benefits. CloSYS is often recommended by dentists for patients with periodontal disease because of its strong antibacterial action.
Price and Value Comparison
Both brands are priced similarly for standard 16-ounce bottles (around $8–$12). However, TheraBreath frequently offers bundle deals that provide better value. For instance, the TheraBreath Healthy Gums Oral Rinse & Toothpaste Bundle combines a gum-specific rinse with a matching toothpaste, saving you money compared to buying separately. CloSYS typically sells single bottles or multi-packs but lacks specialized bundles. If you're on a budget and want a complete routine, TheraBreath bundles are a smart choice.
What Dentists Say
Many dentists recommend both brands for patients with sensitive gums. CloSYS is often praised for its unflavored, dye-free formula that minimizes irritation. TheraBreath is favored for its flavor variety and ability to combat dry mouth—a common side effect of gum sensitivity medications. Ultimately, the best choice depends on your specific needs: if you prioritize flavor and fresh breath, go with TheraBreath; if you want a no-frills, ultra-gentle formula, CloSYS may be better.
Final Verdict: TheraBreath vs. CloSYS for Sensitive Gums
Both TheraBreath and CloSYS are excellent alcohol-free mouthwashes that are safe for sensitive gums. TheraBreath edges ahead for those who want a pleasant taste, dry mouth relief, and value-packed bundles. CloSYS wins for users who need a completely neutral, dye-free option with powerful antibacterial action. For most people with mild to moderate gum sensitivity, TheraBreath offers a more enjoyable daily experience without sacrificing effectiveness.
Ready to try a product that’s gentle on gums but tough on bacteria? Explore the TheraBreath Healthy Gums Oral Rinse & Toothpaste Bundle to start a complete, soothing routine today.



