DIY Matcha Green Tea Mouthwash to Beat Bad Breath, Gingivitis, and Cavities

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Hi, I’m Dr. B, practicing functional dentist for 35 years. I graduated from the Dugoni School of Dentistry in San Francisco, CA in 1987 and am a member of the American Academy of Dental Sleep Medicine (AADSM), Academy of General Dentistry (Chicago, IL), American Academy for Oral Systemic Health (AAOSH), and Dental Board of California. I'm on a mission to empower people everywhere with the same evidence-based, easy-to-understand dental health advice that my patients get. Learn more about Dr. B

When you think of mouthwash, “green tea” might not be the first thing that comes to mind…but maybe it should be.

Ask the Dentist is supported by readers. If you use one of the links below and buy something, Ask the Dentist makes a little bit of money at no additional cost to you. I rigorously research, test, and use thousands of products every year, but recommend only a small fraction of these. I only promote products that I truly feel will be valuable to you in improving your oral health.

Conventional mouthwash isn’t as great for you as commercials might make you believe. In fact, there are many mouthwash risks that may lead to worse dental health in the long term. You can see my article for more information, but mouthwash might actually lead to some of the things it’s supposed to prevent.

I recommend my patients completely ditch the regular mouthwash and try natural mouthwashes or DIY options instead.

While researching the best ingredients for a mouthwash to combat common oral health issues, green tea pops up to the top of the list.

Green tea mouthwash has been proven to:

For this recipe, I used my favorite, most vibrant green tea: matcha. Rinse your mouth 1-2 times each day with this mouthwash for best results.

I’d love to see your results trying this recipe! Find me on Instagram or email your photo to [email protected].

Learn More: DIY pH Balancing Mouth Rinse Print

DIY Matcha Green Tea Mouthwash

Get rid of burning mouthwashes that make bad breath worse and make your own DIY matcha green tea mouthwash instead.

  • Author: Mark Burhenne DDS
  • Prep Time: 5 minutes
  • Total Time: 5 minutes
  • Yield: 18 servings 1x




1. Add all ingredients to a jar with a lid or high-speed blender.

green tea mouthwash

2. Shake or blend until well-combined.

green tea mouthwash

3. Use 1 tablespoon and swish in your mouth for 30 seconds to 1 minute.

green tea mouthwash


Can be kept in the fridge or stored on the counter for up to 2 weeks. Just make sure to shake it before you use it.

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3 References

  1. Rassameemasmaung, S., Phusudsawang, P., & Sangalungkarn, V. (2012). Effect of green tea mouthwash on oral malodor. ISRN preventive medicine, 2013. Full text:
  2. Priya, B. M., Anitha, V., Shanmugam, M., Ashwath, B., Sylva, S. D., & Vigneshwari, S. K. (2015). Efficacy of chlorhexidine and green tea mouthwashes in the management of dental plaque-induced gingivitis: A comparative clinical study. Contemporary clinical dentistry, 6(4), 505. Full text:
  3. Rozmoozi, E., Bekhradi, R., Taleba, M. R., Barouti, P., Kamali, E. (2018). Effect of green tea mouthwash on reducing plaque and gingivitis. J Dent Health Oral Disord Ther. 9(2): 207-210. Full text: