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Why Does Mouthwash Burn? Decoding Oral Health Mysteries

By Dr. Aastha Manchanda +2 more

Key Highlights: 

  • Mouthwashes can be alcohol-based, alcohol-free, or of special types  
  • The main cause of burning sensation with mouthwashes is their alcohol content and essential oils 
  • Individual sensitivity and allergies also boost discomfort 
  • Dental problems like canker sores, gum irritation, and mouth infections can heighten burning 
  • Ways to ease the burn include selecting the right mouthwash, diluting it, and using it correctly 
  • Always get a dentist’s advice if the annoyance lasts or gets worse 

Introduction 

Mouthwash is an everyday care product used by many to keep their oral health up to the mark. Although a lot of people use it for their daily dental care, some feel an unpleasant side effect – a burning feeling in the mouth with mouthwashes.  

This blog dives into the riddles of mouthwash and the linked burning sensation. We’ll look at the various mouthwash types, the contents that may pain you, and what adds to the burn. We’ll provide tips as well on making mouthwash easier to use and understanding its pros and cons. 

why does mouthwash burn

Types of Mouthwashes 

To know why mouthwash burns, we first need to know the different types of mouthwashes, what are they made of, and what they do. 

1. Alcohol-based mouthwashes 

Alcohol-based mouthwashes have lots of alcohol in them. This alcohol works as a solvent for other useful parts. The key parts of these mouthwashes are: 

  • Antibacterial agents like alcohol and thymol – they help to kill bacteria, lower plaque, and improve bad breath 
  • Flavouring agents like menthol, eucalyptol, and cetylpyridinium chloride. They help make your mouth feel fresh after rinsing. 
     

2. Alcohol-free mouthwashes 

For those who want a kinder choice, alcohol-free mouthwashes offer the same perks, possibly without the burn. The key parts of these types include: 

  • Non-alcoholic anti-bacterial agents like cetylpyridinium chloride. They kill bacteria and freshen breath. 
  • Fluoride that strengthens teeth and prevents cavities. 
  • Soothing agents like aloe vera and chamomile to reduce annoyance in sensitive mouths. 
     

3. Specialty mouthwashes 

Specialty mouthwashes are made for specific oral care needs. They provide benefits based on what the user needs. 

4. Whitening 

Whitening mouthwashes mostly have hydrogen peroxide or other bleaching agents that can remove stains and make teeth appear whiter. 

5. Dry mouth relief 

Made for those with dry mouth symptoms, these mouthwashes have moisturising agents like glycerin or xylitol. These ingredients may ease dryness and encourage saliva production. 

6. Kids’ mouthwash 

Kids’ mouthwashes, made for young children, have milder flavours and a low or no alcohol mix. This makes for a safe and refreshing experience. 

Did you know?

  • Alcohol-based mouthwashes are more likely to cause a burning sensation than alcohol-free mouthwashes.Source: ncbi
  • The burning sensation after using mouthwash is often temporary and subsides within a few minutes.Source: ncbi
  • Some individuals may be more sensitive to the ingredients in mouthwash, leading to a burning sensation. Source: ncbi
  • Mouthwashes containing menthol or eucalyptol are more likely to cause a burning sensation. Source: ncbi

Why Does Mouthwash Burn? 

Many factors add to the burning feeling when using mouthwash. Let’s look deeper into these reasons. 

1. Alcohol content 

  • The good and the bad 

Alcohol is used in mouthwash because of its antibacterial traits. This helps kill bacteria and improves overall mouth health. But, this alcohol in mouthwashes may cause a burning feeling. The amount of alcohol in mouthwashes ranges from 18% to 26%. Higher amounts of alcohol can cause strong burning feelings. It can even cause discomfort to the cheeks, teeth and gums. 

2. Essential oils and flavours 

Menthol, a common flavoring agent from peppermint may also add to the burn. Some people are more sensitive to menthol. So, the burning can be stronger for them. 

3. Individual reactions and allergies 

People may react differently to the same mouthwash agents. Some may be more likely to feel discomfort or have greater sensitivity to alcohol or menthol. This can add to the burning. Knowing which parts may irritate your mouth helps in selecting a better mouthwash. 

4. Dental Problems Leading to Mouthwash Burning 

Certain mouth health conditions can make the burning from using mouthwash worse. 

5. Oral health conditions 

  • Canker sores and ulcers 

People with canker sores or mouth ulcers may feel more pain in these areas when using mouthwash. Mouthwash with alcohol or menthol can cause discomfort to the wounds and even slow their healing. 

  • Gum soreness and gingivitis 

Having gingivitis can make your gums feels sore and become especially sensitive to agents like alcohol in mouthwash. Even though mouthwashes can help reduce plaque, continuous use of certain mouthwashes may make gum inflammation worse. This can cause more unease. 

  • Oral infections 

People suffering from oral infections may also feel stronger burning sensation while using mouthwashes with alcohol or menthol. A dental professional should be consulted to treat the root infection and avoid worsening of symptoms. 

To my knowledge the burning sensation in some mouthwashes may be mainly attributed to the presence of menthol. Menthol, known for its cooling effect, might create a tingling or burning sensation in the mouth. If this sensation is too intense it can cause burning in the mouth, opting for a mouthwash with lower menthol content or a different flavor might be a more comfortable choice. Always follow recommended usage guidelines for oral care products.

Dr. Siddharth Gupta, MD

How to Make Mouthwash Use More Comfortable 

If mouthwash use causes a burning feeling, there are steps that can help in reducing the discomfort. 

1. Selecting the right mouthwash 

  • Choosing alcohol-free or mild options 

Opt for mouthwashes without alcohol or with mild flavours to reduce the burn. These milder options still cleanse adequately without causing discomfort. 

2. Diluting mouthwash 

  • Mixing with water 

Mixing mouthwash with water may cut down the burn. This keeps the mouthwash working while making it easier to bear. 

  • Proper dilution amounts 

Follow the correct amount of water to use in diluting to make sure the mouthwash still works. Read the product label for the right amounts. 

3. Correct usage and time 

  • Rinsing duration 

Stick to the advised rinse time given in the mouthwash directions. Over rinsing can increase burning and unease. 

  • How often to use mouthwash 

Be aware of the number of times you use mouthwash. Using it too much can lead to oral tissue irritation. Follow the label on the product or get the advice of a dental professional. 

Studies have shown that mouthwashes with alcohol deliver potent antiseptic properties but may lead to a burning sensation. I would suggest opting for alcohol-free alternatives provide a milder experience without compromising oral hygiene benefits. Always follow recommended usage instructions for optimal oral care.

Dr. Rajeev Singh, BAMS

Benefits of Using Mouthwash 

Adding mouthwash to your oral care habits may offer increased benefits. These include: 

1. Better oral health 

Fighting plaque and gingivitis 

The antibacterial traits present in mouthwashes can help fight against plaque build-up and gingivitis. This supports gum health. 

  • Fresh breath 

Mouthwashes get rid of bad breath-causing bacteria very well. They leave your mouth feeling fresh and clean. 

  • Removing food bits 

Using mouthwash can remove trapped food bits between teeth. This lowers the risk of tooth decay. 

2. Strengthening teeth 

  • Fluoride and enamel 

Mouthwashes with fluoride help to strengthen tooth enamel. This reduces the risk of cavities and supports overall dental health. 

Mouthwash Warnings 

Before adding mouthwash to your routine, think about some key warnings. 

1. Understanding parts 

  • Avoiding harmful components 

Check the mouthwash labels with care to spot any components that you may be allergic to or dislike. Choose mixes that fit your personal needs and likes. 

2. Knowing when to consult a dentist 

  • Before trying a new product 

It is ideal to consult your dental care provider before incorporating a new mouthwash in your daily oral care routine. They can suggest you the best option based on your particular dental condition and sensitivities. 

  • Lasting unease or discomfort 

If burning or unease continues despite trying different mouthwashes, see a dental professional. This is done to find out the cause and decide the best fix. 

Strong burns or reactions 

If you feel a strong burn or reaction to mouthwash, stop use at once and contact a dental professional. They can provide guidance and other ways to go about it. 

Conclusion 

To sum it up, the main things adding to mouthwash burn are alcohol content, essential oils like menthol, and personal reactions. Dental issues like canker sores, gum inflammation, and infections can also add to the discomfort caused by the mouthwash. By picking the right mouthwash, diluting when needed, and using it the right way, you can lower the burning sensation. It’s best to consult your dental health provider for guidance on the type of mouthwash that is suitable to you, especially if you have allergies or severe burning with mouthwash use. 

Also Read: Burnt Tongue and Burning Mouth Syndrome: Quick Relief Tips and Management Methods

Frequently Asked Questions (FAQs) 

Do all mouthwashes burn? 

No, not all mouthwashes burn. Those with high alcohol content, strong flavours, or essential oils like menthol may cause a burn. Milder or alcohol-free mixes are available to provide a kinder experience. 

Is the burning feeling a sign that the mouthwash is working? 

A burning feeling does not really mean that the mouthwash is working. It is usually caused by alcohol and the flavouring parts in the mouthwash. Effective mouthwashes can come in various levels of strength and sensitivity. 

How can I avoid the burning feeling when using mouthwash? 

To avoid the burning, choose milder or alcohol-free mouthwashes. Dilute the mouthwash with water as shown on the label and follow the right usage and duration tips. 

Should I rinse my mouth with water after using mouthwash? 

It’s not recommended to rinse with water after using mouthwash. It may cancel out the benefits of the mouthwash. Check the product label for specific rinsing instructions. 

How long should I wait after using mouthwash to eat or drink? 

Usually, it is advised to wait at least 30 minutes after using mouthwash to eat or drink. This lets the mouthwash work well and prevents you from swallowing harmful components. 

References: 

  1. ScienceDirect. Mint [Internet]. [cited 2023 Dec 13]. Available from: https://www.sciencedirect.com/topics/food-science/mint 
  1. National Center for Biotechnology Information (NCBI). Comparative Evaluation of Antiplaque Efficacy between Essential Oils with Alcohol-Based and Chlorhexidine with Nonalcohol-Based Mouthrinses [Internet]. [cited 2023 Dec 13]. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5502550 
  1. PubMed. Comparative evaluation of salt water rinse with chlorhexidine against oral microbes: A school-based randomized controlled trial [Internet]. [cited 2023 Dec 13]. Available from: https://pubmed.ncbi.nlm.nih.gov/28914244 
  1. PubMed. Chlorhexidine mouthwash plaque levels and gingival health [Internet]. [cited 2023 Dec 13]. Available from: https://pubmed.ncbi.nlm.nih.gov/28642555 

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