Most mouthwashes mask bad breath for twenty minutes. A few actually neutralize it. None of them fix the cause. Here is how to choose, and what to do first.
Ingredients that work
- Zinc binds the sulphur compounds that cause odour rather than covering them. Look for zinc chloride or zinc lactate.
- Cetylpyridinium chloride (CPC) reduces the bacteria that produce sulphur.
- Chlorine dioxide oxidizes odour compounds directly.
- Chlorhexidine is the strongest antibacterial rinse but stains teeth with long use; short courses only, on a hygienist’s advice.
Ingredients that make it worse
Alcohol. It gives a strong initial burn, then dries the mouth, and dry mouth breeds the bacteria you are trying to control. Choose alcohol-free.
Why mouthwash alone fails
Persistent bad breath comes from bacteria in gum pockets, on the back of the tongue, and in tartar. Rinsing cannot reach into a gum pocket or remove tartar. That is why the fix is a professional cleaning, daily flossing and tongue scraping, with mouthwash as the finishing touch.
A routine that works
- Brush twice daily with fluoride toothpaste
- Floss or use interdental brushes every day
- Scrape the back of the tongue each morning
- Rinse with an alcohol-free zinc or CPC mouthwash
- Drink water through the day; treat dry mouth if you have it
- Professional cleaning every three to six months
If breath is still bad after a cleaning and this routine, the cause may be tonsils, sinuses or reflux, and your physician is the next stop.