Essential Oil Mouthwash: A Simple DIY Recipe (and Its Limits)

Many commercial mouthwashes already rely on essential oils — that familiar medicinal tingle comes largely from compounds found in thyme, eucalyptus, and mint. So it’s natural to wonder: can you make an essential oil mouthwash at home, and will it actually help your gums? The short answer is yes, you can, and it can be a pleasant addition to your routine — as long as you follow a few safety rules and understand what a rinse can and cannot do.

A simple DIY essential oil mouthwash recipe

Here’s a basic rinse we’re comfortable suggesting as a supplement to brushing and flossing:

• 1 cup (250 mL) of water — distilled or previously boiled and cooled
• 1 teaspoon of baking soda (optional; helps neutralize acids)
• 2 drops of peppermint essential oil
• 1 drop of tea tree or clove essential oil

Combine in a clean glass bottle and shake well before every use — oil and water separate, and shaking disperses the oil so you don’t get a concentrated mouthful. Swish a small amount for 30–60 seconds, spit it out completely, and rinse with plain water. Make small batches and use them within a week or so, since homemade rinses contain no preservatives.

Safety rules that aren’t optional

• Never swallow. Essential oils are not for internal consumption, and tea tree oil in particular is toxic if ingested. Spit everything out.
• Stick to the drop counts. More is not better — concentrated oils can irritate or burn oral tissues.
• Use food-grade oils from a reputable supplier, not fragrance oils.
• Keep it away from children. Kids swallow rinses; this one isn’t for them.
• Skip it if you’re pregnant or nursing, have oral sores, or notice any burning or irritation — and check with your dentist or physician first if you have health conditions or sensitivities.

What an essential oil rinse can do for gum health

Peppermint, tea tree, thyme, and clove oils all have antibacterial properties, and research suggests rinses containing essential oils can help reduce plaque and mild gum inflammation (gingivitis) when used alongside brushing and flossing. A daily rinse can also freshen breath and reach spots your brush skims past. That’s genuinely useful — it’s why essential oils have appeared in commercial mouthwashes for over a century. For the full rundown of which oils do what, see our pillar guide to essential oils for oral health.

DIY vs. commercial mouthwash

Is homemade better than store-bought? Honestly, mostly a matter of preference:

• Commercial essential-oil rinses are formulated at tested concentrations, are shelf-stable, and some carry recognized seals for reducing plaque and gingivitis. Some contain alcohol, which certain people find drying or harsh.
• DIY rinses let you control the ingredients, skip alcohol and artificial colours, and cost pennies — but the concentration is approximate, there’s no preservative, and no formal testing behind your kitchen batch.
• Prescription rinses (like chlorhexidine) are a different category entirely — genuinely medicinal, dentist-directed, and what we reach for when gums need real intervention.

If you enjoy a homemade rinse and use it safely, carry on. Just don’t assume “natural” means “stronger” — usually the opposite is true.

When a mouthwash — any mouthwash — isn’t enough

Here’s the part we most want you to hear: no rinse can treat gum disease. Rinses work on the surfaces they touch. Gum disease lives below the gumline, where plaque hardens into tartar that only professional instruments can remove. If you notice:

• Gums that bleed when you brush or floss
• Red, puffy, or tender gums
• Persistent bad breath despite rinsing
• Gums pulling away from your teeth, or teeth that feel loose

…then a mouthwash is a bandage on a problem that needs professional gum disease treatment. Caught early, gingivitis is fully reversible with a professional cleaning and good home care. Left alone, it progresses to periodontitis — and no recipe fixes that.

FAQ

Does essential oil mouthwash help with gum disease?

It can help with the earliest stage — mild gingivitis — by reducing plaque bacteria alongside brushing and flossing. It cannot treat established gum disease, which involves tartar and infection below the gumline that only a professional cleaning can address.

What essential oils are best for a mouthwash?

Peppermint (freshness and plaque control), tea tree (antibacterial), thyme (antiseptic, used in commercial rinses), and clove (antibacterial and soothing) are the usual choices. Use only 2–3 drops total per cup of water.

Can you swallow essential oil mouthwash?

No. Always spit it out and rinse with water afterward. Essential oils aren’t meant to be ingested, and tea tree oil is toxic if swallowed.

How often should I use a DIY mouthwash?

Once or twice a day is plenty, after brushing. If you notice any irritation, burning, or sensitivity, stop and mention it at your next dental visit.

Is homemade mouthwash as good as store-bought?

For freshening breath and adding a mild antibacterial rinse, they’re broadly comparable. Commercial rinses have tested, consistent formulations; homemade rinses are cheaper and customizable. Neither replaces brushing, flossing, or professional cleanings.

Bleeding gums? Let’s look below the surface

If you’re rinsing to manage bleeding or tender gums, that’s your cue to book a proper gum assessment. Cornwall Dental Arts offers thorough, gentle periodontal care with clear explanations and a pace tailored to you. Call (613) 932-2058 or request an appointment today.