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Bottle of homemade mouthwash with homemade toothpaste and a bamboo toothbrush

DIY Homemade Mouthwash

Last Modified: February 28, 2020 // by Tracy Ariza, DDS // June 3, 2023 I may receive a commission if you purchase through links in this post. Learn more here.

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Refresh, cleanse, and heal with this natural, homemade mouthwash that is alcohol free, inexpensive, and easy to make yourself! (A dentist's recipe and tips!) #DIY #mouthwash #natural #thethingswellmake #miy #oralcare
Refresh, cleanse, and heal with this natural, homemade mouthwash that is alcohol free, inexpensive, and easy to make yourself! (A dentist's recipe and tips!) #DIY #mouthwash #natural #thethingswellmake #miy #oralcare
Photo of homemade mouthwash with text

Refresh, cleanse, and heal with this natural, homemade mouthwash that is alcohol-free, inexpensive, and super easy to make yourself!

Bottle of homemade mouthwash with homemade toothpaste and a bamboo toothbrush
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If you’ve been reading my blog for a while, you might already know that I am a non-practicing dentist. While my blog covers a variety of topics, it would be remiss of me to leave out a subject that I have expertise in. 

My whole reason for starting this blog was to share my knowledge and empower you to take control of what you eat and use.

In the interest of doing that, I have already shared a few dental care recipes. I’ve shown you how to make a homemade toothpaste, tooth powder, and toothpaste tablets. 

But what about when you can’t brush? Or when you have a special healing need?

The purpose of mouthwash

Most people use mouthwash either in the hopes of eliminating bad breath or to help their mouths feel fresh and clean. 

There are numerous types of mouthwash available that serve a variety of different purposes. Some claim to help fight cavities, others to help remove plaque, tartar, or gingivitis (aka. gum disease). Still, others claim to help whiten teeth.

When should you use it?

While most people don’t need to use mouthwash on a daily basis, there are times when it could come in handy. All of these reasons are valid reasons for wanting to use a mouthwash…

  • Perhaps you want to freshen your breath before a date. Or maybe you can’t get a brushing in, and you’re looking for a way to clean your mouth and raise the pH after eating.
  • You may have dental pain and want to soothe your mouth until your dentist is able to see you. Or maybe you’re trying to ease the pain of a canker sore or other small wound and help keep it from getting infected. 
  • Maybe you have a sore throat and want to gargle with something to help lessen the pain.
  • Perhaps you have deep periodontal pockets or hard-to-reach areas in your mouth that you feel could benefit from a good rinse. Occasional rinses with mouthwash can help maintain good oral hygiene. 

Why make it yourself?

If you feel like you’re a good candidate for mouthwash, why not make it yourself? By making your own homemade mouthwash, you control the ingredients.

You can choose what ingredients to use and what quality you want them to be. Choose whether to add ingredients like essential oils to your recipe and what flavor to use. Avoid the alcohol and unwanted chemicals in many commercial mouthwashes. 

Not only that, but you can save yourself money. 

This is a very inexpensive, super quick-and-easy DIY!

Is mouthwash effective? 

Whether a mouthwash is effective depends on what that particular mouthwash is meant to do. Some are considered cosmetic, and others are considered therapeutic.

Cosmetic mouthwash

Cosmetic mouthwashes are meant to give a temporary feeling of freshness and may temporarily help with bad breath. Other than that, they don’t really do much. For many people, that may be enough.

Therapeutic mouthwash

Therapeutic mouthwashes have active ingredients meant to serve some sort of purpose. They may have added fluoride to try to help prevent cavities. Hydrogen peroxide may be added in the hopes of whitening teeth. Others add ingredients like chlorhexidine, an antimicrobial agent, meant to help fight gingivitis and periodontitis.

While certain therapeutic mouthwashes can be helpful in certain situations, they may have side effects that make them unsuitable for daily use.

Some studies do show that using mouthwash can help reduce plaque and gingivitis. (For example, mouthwash with essential oils does help reduce plaque and gingivitis.)

Best mouthwash ingredients

For my DIY mouthwash, I use a combination of the following ingredients:

Salt

Salt is a healing ingredient that has been used in medicine by many cultures since ancient times. It is, perhaps, the most important ingredient to use in a homemade mouthwash because of its healing properties. Saltwater rinses are often prescribed after dental surgeries because they can help soothe and promote healing by reducing inflammation and contracting the tissues.

Saltwater rinses may also help alkalize the mouth by helping to destroy the acid-forming bacteria that cause cavities and gingivitis. Using a natural salt, like Himalayan salt, could be helpful in providing essential trace minerals that may help in the remineralization of your teeth.

The addition of salt also helps preserve your homemade mouthwash.

Baking soda on a wooden spoon held over a jar of baking soda.
Baking soda

Baking soda

With a pH of around 9, baking soda is alkaline. Adding it to your homemade mouthwash can help alkalize the mouth, making it a less hospitable place for bacteria that cause cavities and gingivitis. It can also help balance your oral pH after having ingested acidic foods that can be damaging to your teeth.

Combining salt and baking soda when rinsing is not a new idea. The National Cancer Institute recommends using a rinse of water, baking soda, and salt to help reduce some of the oral side effects of chemotherapy (like mouth pain). It’s a natural, gentle, healing combination that is great for a variety of issues.

Overhead view of xylitol on a wooden spoon over a jar of it.
Xylitol

Xylitol

A sweetener that won’t damage your teeth, xylitol may even help prevent cavities. My main reason for adding it is to make the mouthwash more palatable by giving it a sweet flavor. It’s a totally optional ingredient, though, so if you are opposed to using it, don’t add it!

While xylitol is safe for humans to consume, it can be toxic to animals, especially dogs. So, don’t make oral care products for your animals with xylitol, and make sure you keep it out of their reach.

Mineral drops

Adding mineral drops, like Concentrace Trace Mineral Drops is also optional. I include these to surround the teeth with helpful minerals that can potentially contribute to the remineralization process of any areas that may have been demineralized by the harmful bacteria present in dental plaque.

These same mineral drops make a great addition to your homemade toothpaste, tooth powder, or even your drinking water. So, they’re great to have on hand for other purposes.

Essential oils

Essential oils add flavor to your mouthwash, but they are an active ingredient when used in a high enough concentration. The goal is to have the oils disrupt the bacterial cell wall of the bacteria in your plaque. If you kill the bacteria, it won’t form acid, which thereby helps avoid cavities, gingivitis, and periodontal disease.

You can use one of several popular essential oils, depending upon your flavor preference; or use a combination of different oils. Some great choices are clove, cinnamon oil, tea tree, spearmint, peppermint, and wintergreen. (I elaborate more below.)

If you plan on having children use this mouthwash, you can add peppermint extract instead of peppermint essential oil to flavor your mouthwash. (It won’t be completely alcohol-free, then, but the amount of alcohol added is almost negligible.)

Mouthwash ingredients to avoid

As much as I love making apple cider vinegar and kombucha, acidic ingredients should have no place in homemade mouthwash recipes. Acids released by the bacteria in dental plaque are what erode away the enamel, eventually leading to tooth decay. You don’t want to purposefully bathe your teeth in an acidic liquid. 

I also prefer avoiding alcohol in mouthwash.

Why avoid alcohol-based mouthwash?

One of the best dental school instructors I had was a periodontist who advised us that if you brush and floss your teeth correctly, using mouthwash is usually unnecessary for healthy people. He pointed out that most of the popular mouthwashes have alcohol in them, and the use of alcohol in a mouthwash could be drying to the mucosa.

Using an alcohol-based mouthwash can leave your mouth feeling cleansed. They have a cooling effect that feels refreshing. With continued use, though, they could potentially lead to a dry mouth.

Dry mouth

Having a dry mouth makes you more susceptible to getting cavities. If your main goal in using mouthwash is to prevent cavities, using an alcohol-based mouthwash may actually be doing more harm than good.

You could choose a fluoride-based rinse instead, but that takes us back to the debate about if you should be using fluoride or not. (I touched on that in my clay-based homemade toothpaste post.)

Effect on plastic fillings

I found one study that looked at the solubility of composite resins (tooth-colored fillings) in different solutions, including an alcohol-based mouthwash. They concluded that it may be best for people with a lot of composite restorations to avoid using alcohol-based mouthwash.

Does it cause cancer?

Some people believe that mouthwash with alcohol may give you an increased chance of developing oral cancer. The studies don’t really show a connection. The ADA has taken the stance that mouthwashes with alcohol in them are safe.

I’ll leave you to be the judge of whether you want to use an alcohol-based mouthwash or not. 

Best essential oils for mouthwash

Many commercial brands of mouthwash use combinations of several essential oils to give their product good flavor and to leave your mouth feeling fresh. Listerine uses a combination of thymol (found in thyme oil), menthol (found in peppermint oil), eucalyptol (found in salvia and eucalyptus), and methyl salicylate (wintergreen).

If you feel that your child is likely to ingest the mouthwash, rather than spit it out, it’s probably best to leave the oils out altogether or not use mouthwash at all.

The ADA doesn’t recommend the use of mouthwash in children under 6 anyway as swallowing reflexes may not be well-developed yet in young children.

Clove oil

Clove oil is a great oil to use in homemade mouthwash because of its anti-inflammatory and analgesic properties. Gargling with a mouthwash made with clove oil may help soothe a sore throat, and it may also help relieve other pain from toothaches or ulcers in the mouth.

The eugenol component of clove oil is no stranger to dentistry. Zinc oxide-eugenol cement is commonly used as a temporary filling material.

Clove oil is generally safe to use with children over age 2, but I don’t suggest using a mouthwash with any oil on a child that young.

  • An amber bottle of clove essential oil surrounded by cloves.
    Clove oil
  • An amber bottle of peppermint essential oil in front of a group of peppermint leaves.
    Peppermint oil
  • An amber bottle of wintergreen essential oil surrounded by fresh wintergreen
    Wintergreen oil

Tea tree oil

Tea tree oil isn’t the most pleasant tasting of the oils, but some people choose it for its antimicrobial properties. It may help in cases of oral candidiasis and may also help with gingivitis.

As this oil isn’t generally taken orally, you want to be especially sure to spit this one out. I don’t suggest using it with children.

Wintergreen oil

Wintergreen oil tastes great and can help with the inflammation and pain from infections. It’s thought to help naturally reduce bad breath. As it can be toxic in high concentrations, such as those found in essential oils, this is another one you want to make sure to spit out.

Wintergreen can lead to the development of Reye’s syndrome when used by children under the age of 10.

Peppermint oil

My favorite oil for a homemade natural mouthwash is peppermint. It’s easy to find, great for a number of other uses, and it gives your mouth a fresh, clean feeling. There’s no need to use alcohol in your mouthwash when you can get that same fresh kick from a few drops of peppermint oil.

Peppermint is generally safe for children over the age of 6, but can sometimes (very rarely) lead to respiratory issues in younger children.

Is it bad to use essential oils in mouthwash?

Some people are worried about using essential oils in homemade mouthwash and toothpaste because of their antimicrobial properties. The idea is that essential oils may have a similar effect on the balance of bacteria in the mouth as antibiotics do on the gut. In other words, they could kill both good and bad bacteria, upsetting the delicate balance of oral microorganisms.

Though essential oils do possess antimicrobial properties, I don’t believe they are potent enough to disturb the natural harmony of your mouth. You would need to use a ridiculously high concentration to cause issues.

Anybody who has made homemade natural products like homemade lotion or a homemade hair conditioner knows that essential oils can NOT be used as preservatives. If you don’t use a proper preservative in your products, even if you add essential oils, they will quickly develop bacteria and mold.

For more information about effective preservatives and why essential oils are not true preservatives, see my guide to natural preservatives.

Are essential oils effective at combating gingivitis and plaque?

There is a study that helps support the idea of using a mouthwash with essential oils to help reduce plaque and gingivitis. The patients with gingivitis who used a mouthwash containing essential oils along with brushing and flossing had less gingivitis and plaque than those who didn’t use mouthwash or used one without essential oils.

If you are still concerned, you can leave the essential oils out. Or, just save them for moments when you are dealing with dental pain, gingivitis, or inflammation of any other type.

How to use

Mouthwash can be used before or after brushing your teeth. It can also be used between brushings, when you aren’t able to conveniently brush your teeth during the day.

It’s especially helpful to rinse your teeth with mouthwash after flossing, to help remove any debris that you may have pulled out from between your teeth.

  • Pour a small amount of mouthwash from the bottle into a small cup. About half an ounce (15ml) is enough.
  • Swish the mouthwash around in your mouth for around half a minute.
  • Finish by gargling some of the mouthwash to help clean the back of the tongue and throat area. This is especially helpful if you are dealing with a sore throat.

Make smaller batches rather than try to keep larger batches for longer periods of time. While the mouthwash should safely keep for longer, it may degrade with time. Ideally, mix up what you think you’ll use in a week. (Remember- this is quick and easy to make!

Storage

Store in an airtight bottle in a cool, dry place for up to a week.

Make smaller batches rather than try to keep larger batches for longer periods of time. While the mouthwash should safely keep for longer, it may degrade with time. Ideally, mix up what you think you’ll use in a week. (Remember: this is quick and easy to make!)

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Bottle of homemade mouthwash with homemade toothpaste and a bamboo toothbrush

Homemade Natural Mouthwash

Refresh, cleanse, and heal with this natural, homemade mouthwash that is alcohol free, inexpensive, and easy to make yourself!
4.77 from 39 votes
Print Rate
Prep time: 5 minutes minutes
Active time: 5 minutes minutes
Total time: 10 minutes minutes
Author: Tracy Ariza, DDS

Materials

  • 1 tsp. salt
  • 1 tsp. baking soda
  • 1 tsp. xylitol
  • 8 drops peppermint essential oil or other oil(s), optional
  • 20 drops mineral drops
  • 1 cup distilled water
Switch units back – Convert units

Instructions

  • Add all of the ingredients to a storage bottle and mix thoroughly.
  • Shake before each use to help disperse the oils and any baking soda or traces of salt that may have settled to the bottom of the bottle.

Notes

To use, pour a small amount into a glass. (15ml or 0.5 ounces is a good estimate of how much to use.) Swish the mouthwash in your mouth for around half a minute. Finish by gargling the mouthwash to help clean the back of the tongue and throat.
Mouthwash can be used before or after brushing your teeth. It can also be used between brushings, when you can’t conveniently brush your teeth throughout the day. It can also be used as a gargle for a sore throat.
Take care when using essential oils with children. If they will likely swallow the mouthwash, rather than spit it out, it’s probably best to leave out the essential oils or have them avoid using a mouthwash altogether. 
While the salt and the alkalinity of the baking soda help preserve the mouthwash, it’s best to make small batches more frequently rather than keeping a large batch for a longer period of time. 
The American Dental Association does not recommend using mouthwash in children under 6 because they have not fully developed their swallowing reflex yet and may swallow large amounts. 
 
Tried making this? Tag me today!Mention @thethingswellmake or tag #thethingswellmake!

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This post was originally published on Jan. 2, 2018. It was updated and republished in June 2023 with new information and full tutorial video.

Category: Oral Care

About Tracy Ariza, DDS

Tracy Ariza, B.A., D.D.S., left dentistry and the United States to found Oh, The Things We’ll Make!, writing to you from the Spanish Riviera. She loves making things herself in order to keep control of what goes in them. While far from perfect, she strives each day to live a healthier, more sustainable lifestyle.

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Comments

  1. Lykketone

    September 6, 2022 at 3:38 PM

    That sounds really good and I will try it very soon! What do you think of adding a few drops of colloidal silver to this? and cinnamon? And the freshness if lemon EO… Or is that harmful to the teeth? I think I need to do some experimenting… 😎 Thanks for sharing! 🙏

    Reply
    • Tracy Ariza, DDS

      September 9, 2022 at 6:22 PM

      Hello,
      I would think that any of those would be fine to add.
      The only downside I see to using cinnamon is that it can be irritating to sensitive skin and gums, but that’s usually when using too high of a concentration of cinnamon essential oil, for example. If using the powder, it’s possible that adding too much could cause the mixture to “go bad” more quickly as any additions of “organic ingredients” (like plant material) generally make a product more prone to microbial growth. In any case, I recommend making smaller batches more often vs. large batches and trying to keep it longer.
      Lemon EO should also be fine as long as you don’t go overboard with it.

      Reply
  2. Vanessa

    April 21, 2022 at 4:32 AM

    Thanks for sharing! Does it keep long?

    Reply
    • Tracy Ariza, DDS

      September 4, 2023 at 4:51 PM

      Keep is a relative term…
      I suggest making small batches and using it quickly to keep it fresher.
      It won’t really “go bad” as the salt and higher pH prevent most microbial growth, but with time it will be less effective and will leave a residue on your glass bottles.
      It’s super quick to mix up, so I’d suggest making a new batch often…keep the batches small.

      Reply
  3. Suzanne

    April 21, 2022 at 4:32 AM

    This looks so good! What a great way to take care of your mouth with just the good stuff!

    Reply
    • Tracy Ariza, DDS

      September 4, 2023 at 4:52 PM

      Thanks, Suzanne!

      Reply
  4. Kendra

    February 1, 2022 at 9:17 PM

    5 stars
    Love this and have been making for quite a while.

    Question — has anyone else had an issue with the salt and stuff “crusting” on the bottom of the container? It’s happened to me continuously and won’t come off in the dishwasher. Any thoughts or recommendations? I follow the recipe to the T (including distilled water) and use Clove and Peppermint EO. I also use it within the week but still have the crusty issue.

    Thank you!

    Reply
    • Tracy Ariza, DDS

      February 7, 2022 at 2:06 PM

      Interesting! I haven’t had that issue. I wonder if it’s something to do with the water used? Do you have highly filtered water?
      A deposit sounds more like a hard water issue.

      Reply
  5. Dimitra

    October 19, 2021 at 12:34 AM

    Hello can i use drops of minerals that contain only vitamins, zinc and iron? Or i should find something else? Thank you kindly for your insights and for the recipe.

    Reply
    • Tracy Ariza, DDS

      September 7, 2023 at 12:50 PM

      Hi Dimitri,
      I’d prefer something with more variety, including minerals generally found in saliva.
      Zinc is in saliva and can be helpful, but iron, in large quantities, can stain teeth.
      In any case, the mineral drops are optional, so you don’t need to use any if you don’t want to.

      Reply
  6. Alexandra

    September 20, 2021 at 4:57 PM

    Could I add activated charcoal to this recipe? Also is this shelf stable? How long would it last sitting out without becoming moldy?

    Reply
    • Tracy Ariza, DDS

      September 30, 2021 at 7:24 PM

      Hi Alexandra,
      I’ve never tried it, but I supposed you could.
      It shouldn’t develop mold because of the high pH of the baking soda and the addition of the salt, but with time the baking soda might break down and become less effective. (Or at least I had read that at one time. I can’t find a source right now.)
      While I don’t think you’d ever deal with mold as long as everything is well mixed, I still recommend making small batches, ideally not more than what you’d use within a couple of weeks at most. (Actually, ideally, I’d probably shoot for about a week’s worth, especially since it’s quick and easy to mix up!)

      Reply
  7. Cindy

    April 21, 2021 at 8:43 PM

    I did it! My first DYI self care product! Smells ok. I added 8 drops of both TeaTree oil and Pepperment oil. The only other thing is I had to use tap water until my RO Countertop water filter arrives! Excited to try it in the morning!

    Reply
    • Tracy Ariza, DDS

      April 21, 2021 at 10:51 PM

      Good for you!
      If using tap water, I’d just be more cautious about trying to keep it for too long. (Generally, in areas with decent tapi water, there shouldn’t be issues, and you could always pre-boil the water to make extra sure there aren’t any pathogenic microbes in the water.) In the case of this recipe, though, which is quick to mix up, I’d actually suggest making new batches often anyway.

      Reply
      • Cindy Neff

        April 22, 2021 at 9:40 PM

        I tried it for the first time this morning, and the thing I really don’t like about it is it’s too salty. It’s the salt flavor that remains in the mouth after use. I know salt has its purpose, but is it ok to leave it out or use something else? I used Tea Tree Oil and Peppermint oil in my mix.

        Thanks, Cindy

        Reply
        • Tracy Ariza, DDS

          April 23, 2021 at 12:08 PM

          Hi Cindy,
          Yes, that’s fine. Just make sure to keep the batches small, and make more often, just to be on the safe side.

          Reply
  8. Alex

    March 14, 2021 at 8:45 AM

    5 stars
    Tried this mouthwash with some added ingredients and the 1tsp salt was way too salty for my tastes. Then again it could just be the salt that I use which is the bulk foods organic table salt. Dumped that batch and making it again just with less salt this time. If anyone is wondering I added a few more eos being myrrh, Manuka, spearmint, Thyme(linalool), wintergreen, tea tree, and Clove all for benefits of healing gingivitis and periodontal disease but also Thyme for tooth sensitivity. Only other change I made to it was using some food grade fractionated coconut oil.
    Overall the mouthwash is a great recipe just I’d recommend adjusting the salt to your tastes, I’m typically someone that likes salty things but the 1tsp the salt over drove the taste of everything else for me.
    And I have a question, can you use boiled filtered(pur faucet mount filter) water in place of distilled water or is that not a great idea?
    I boiled a kettle of fresh filtered water and used that which helps dissolve the salt xylitol and baking soda in the mouthwash, therefore making it smoother and not gritty.

    Reply
    • Tracy Ariza, DDS

      March 14, 2021 at 6:01 PM

      Hi Alex,
      Yes, generally, that’s fine!
      I say distilled water just to be sure that people aren’t adding extra bacteria or other microbes into the mix that could cause issues. If you are boiling filtered water, that should be more than enough to ensure that your water won’t cause problems. (I also add a bit extra salt just to ensure that people won’t have any issues with microbial growth, but having the higher pH and some salt should be good enough in most cases too.)
      I suggest making smaller batches and remixing more often, especially if you are making this with less salt, but it’s really a recommendation for everyone making homemade products at home, just to err on the side of safety!

      Reply
  9. Heidi Nolan

    January 22, 2021 at 2:36 PM

    5 stars
    Great article! I love your website. Very informative.

    Reply
  10. Susan

    December 3, 2020 at 3:48 AM

    Hi Tracy. For this mouthwash, is it ok to combine several of the essential oils in one batch? If so, would you use 8 drops total of the oils, or 8 drops of each oil?
    Thank you!

    Reply
    • Tracy Ariza, DDS

      February 6, 2021 at 6:41 PM

      Hi Susan,
      Yes, that’s fine. I’d keep the total to around 8 drops. It doesn’t have to be super precise, I’m just trying to keep the amount low to prevent irritation to the gums.

      Reply
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Hello, I’m Tracy!

I love making my own natural products like soaps and lotions and my own pantry items like yogurt and salad dressings.
Why do I do it? Sometimes to save money, sometimes because it's healthier, but I always love having control of the ingredients!​
Oh, the things we'll make!...

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