Peppermint Oil for Headache: What the Research Shows

Peppermint oil for headache usually means a diluted oil rubbed on the forehead and temples. This guide covers the one small trial behind that idea, why a bottle of essential oil is not what the trial tested, and when a headache needs a doctor.

We sell an assorted essential oil collection that includes peppermint, so read this with that in mind. Where the evidence is thin, or does not match what we sell, this guide says so. For the wider scent question, see our guide to how scents affect mood, sleep and stress.

Does Peppermint Oil Help a Headache?

It might help a tension headache, based on one small trial, but the evidence is limited. A US health agency says only that a limited amount of evidence suggests topical peppermint oil might relieve tension headaches.

• Where the evidence leans: A 1996 randomised trial by Göbel and colleagues found a 10% peppermint oil solution reduced tension headache pain compared with placebo.
• Where it is cautious: The NCCIH peppermint oil page, updated May 2025, uses the words “a limited amount of evidence” and “might”.
• What that means for you: Peppermint oil is a low-cost thing some people try, not a proven fix. A headache that keeps coming back is worth raising with a professional.

What Did the Peppermint Oil Trial Find?

It found less pain from the peppermint solution than from placebo within 15 minutes, and a result similar to acetaminophen. Forty-one adults with tension-type headache treated 164 headache attacks in total.

• The design: The trial was randomised, double-blind and crossover. Each person treated four headaches, using peppermint oil, placebo, acetaminophen or a combination.
• What was applied: A solution of 10% peppermint oil in ethanol, spread over the forehead and temples, then repeated after 15 and 30 minutes.
• The result: Headache intensity fell significantly compared with placebo from 15 minutes (p < 0.01), and stayed lower over the one-hour observation period. 1,000 mg of acetaminophen also beat placebo, and the two did not differ significantly.
• Side effects: The authors report that patients had no adverse events.
• The limits: Small numbers, one hour of follow-up, and headache pain was self-recorded in a diary. A later review by the same lead researcher, published in 2016, says 10% peppermint oil in ethanol is licensed for tension-type headache; it comes from the same research group, so it is not an independent check.

Is the Trial Preparation the Same as a Bottle of Essential Oil?

No. The trial used a 10% solution in ethanol made for the study, not a bottle of essential oil, and we found no trial of a weaker carrier-oil blend.

• Strength: Our product page suggests diluting to 1 to 3% in a carrier oil for adults, which is far weaker than the 10% tested. This guide does not give a recipe at 10%.
• Base: The tested solution was in ethanol. Our oils are sold as single-botanical essential oils to be diluted in a carrier oil such as jojoba, sweet almond or fractionated coconut.
• The honest read: The trial shows what one specific preparation did. It does not show that a home blend made from any peppermint oil does the same.

What About Migraine and Essential Oils?

The best pooled evidence we found says essential oils did not beat placebo for migraine. A 2023 meta-analysis pooled seven randomised trials with 558 participants and found no clear difference.

• The meta-analysis: Murtey and colleagues (2023) covered lavender, anise, basil, rose, peppermint and chamomile oils, by skin, mouth, nose or inhalation. Migraine attacks differed by −1.34 (95% CI −3.31 to 0.64) and severity by −0.38 (95% CI −1.76 to 0.99), neither statistically significant.
• The catch: The trials disagreed a lot (I² between 86% and 94%), so the average is not reliable either way. Side effects were rare: one skin redness and one hypersensitivity case.
• The lavender trial: A 2012 trial of 47 people with migraine had half inhale lavender oil for 15 minutes and half inhale liquid paraffin. Pain scores fell 3.6 points with lavender versus 1.6 with placebo, and 92 of 129 attacks responded fully or partly versus 32 of 68. It was one small trial.

How Do You Try Peppermint Oil Safely?

Dilute it, patch test it, keep it away from your eyes, and stop if your skin objects. These steps are practical safety advice from our product page and the NCCIH, not a dose from a trial.

1. Do not swallow it. Our product page says aromatherapy grade only; do not ingest.
2. Dilute in a carrier oil. Our product page suggests 1 to 3% for adults, which is 6 to 18 drops per 30 ml, and 0.5 to 1% for sensitive skin. That is our guidance, not the trial's strength.
3. Patch test first. Our product page says always patch test a diluted blend. The NCCIH lists skin rashes and irritation as possible side effects.
4. Keep it away from your eyes. The trial applied its solution to the forehead and temples. If you try a diluted blend, keep it well clear of your eyes and wash your hands afterwards.
5. Stop if it bothers you. Redness, itching, burning or a worse headache are reasons to stop.

Is Peppermint Oil Safe, and Who Should Avoid It?

Peppermint oil on the skin can cause rashes and irritation, and it should not go on the face of infants or young children. The NCCIH names these as its main cautions.

• Skin: Per the NCCIH, applying peppermint oil to the skin can cause skin rashes and irritation.
• Young children: The NCCIH says peppermint oil should not be applied to the face of infants or young children, because serious side effects may occur if they inhale the menthol in the oil.
• Swallowing: The NCCIH lists heartburn, nausea, abdominal pain and dry mouth as possible side effects of oral peppermint oil. Our oils are not for ingestion.
• Pregnancy: The NCCIH says little is known about medicinal amounts of oral peppermint during pregnancy or breastfeeding. We found no data on topical use, so ask your health professional first.

When Should You See a Doctor About a Headache?

See a doctor if a headache does not improve with self-care or is getting worse, and get urgent help for the warning signs below. This guide is information, not medical advice.

• Not improving: The UK's NHS says to see a GP if you have tried treating a headache yourself and it is not getting better or is getting worse.
• Urgent: The NHS lists a headache with vision or eye problems, or with being sick (vomiting), as reasons to get urgent help.
• Emergency: The NHS lists a headache that starts suddenly and is extremely painful, or comes with a rash that does not fade when a glass is rolled over it, as emergencies. In Canada, call 911.

Do not stop a prescribed medicine to try an essential oil. Aromatherapy is not a substitute for care.

Frequently Asked Questions

Does peppermint oil help a headache?

One 1996 trial found a 10% peppermint oil solution reduced tension headache pain versus placebo. The NCCIH calls the evidence limited, so treat it as worth knowing about, not proven.

Where do you put peppermint oil for a headache?

The trial applied its 10% solution to the forehead and temples. Our product page suggests diluting any oil first and patch testing, and keep it away from your eyes.

Can you use undiluted peppermint oil on your temples?

Our product page advises diluting to 1 to 3% in a carrier oil and patch testing. The NCCIH lists skin rashes and irritation as possible side effects.

Does peppermint oil help a migraine?

A 2023 meta-analysis of seven trials found no clear difference between essential oils and placebo for migraine. The evidence is mixed, so talk to a professional about recurring migraines.

Is peppermint oil safe for children?

The NCCIH says peppermint oil should not be applied to the face of infants or young children. Ask a clinician before using any essential oil on a child.

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