Essential Oils · Grasses
Lemongrass Essential Oil: Benefits, Uses, Dilution & Safety
What lemongrass oil is, what the human trials show for gums, dandruff, skin fungus, calm and mosquitoes, how to dilute, diffuse and take it by the drop, and who should skip it.

Why this score?
Its skin-allergy rate holds it down; larger trials would raise it. Weighting: Evidence 30% · Traditional Medicine 25% · Clinical Effectiveness 25% · Safety 20% (5.4×0.30 + 7.0×0.25 + 6.0×0.25 + 6.0×0.20 = 1.62 + 1.75 + 1.50 + 1.20 = 6.07, shown as 6.1). How we score
Interaction check: Low. No medication interaction has been documented in people for lemongrass oil at the amounts on this page, a drop or two by mouth or a 1% blend on the skin. Interactions are rated separately and don't change the score.
Top 50 Healing Herbs & Essential Oils
The 30 healing herbs and 20 essential oils I trust most, each with its five best uses ranked by research, exactly how to take it, how it works, its Traditional Chinese Medicine profile, and when to be careful.
- What’s inside.
- A Letter From Dr. Axe
- How Herbs & Oils Heal
Free with your Dr. Axe account
View the protocol →
Which supplements belong in your top 5?
What's your biggest goal right now?
Lemongrass oil is the essential oil steam-distilled from the leaves of lemongrass, rich in citral, its lemony compound, and in randomized trials it has calmed inflamed gums as well as a chlorhexidine rinse, cut dandruff and eased anxiety during dental work.1234
Crush a stalk of fresh lemongrass between your fingers and a bright, lemony scent rises from the torn leaves. That scent is citral, and lemongrass essential oil holds it in concentrated form.81 Cooks use the leaf in teas, soups and curries, and traditional healers have long used it for pain, fevers and upset stomachs.9
Today the oil has a research record of its own, from mouth rinses and scalp tonics to the scent breathed in during a dental visit.1034
Lemongrass is one of the 20 essential oils I trust most in my field guide, Top 50 Healing Herbs & Essential Oils, where I rank its best uses in this order: fungal infections, muscle aches, insect repellent, inflammation, and stress and mood.5
Citral, its lemony compound, is strongly antifungal and anti-inflammatory in research.Dr. Josh Axe, DC, DNM, CNSWritten in Top 50 Healing Herbs & Essential Oils (2026), p. 49
Get the free Anti-Inflammatory Reset
Muscle aches and inflammation are two of lemongrass oil's top uses in my field guide. This free 30-day protocol works on inflammation from the inside, starting with your plate. It lays out:
- A 30-day plan in four phases: remove, cool, repair and maintain
- The anti-inflammatory herbs and nutrients that work, ranked
- Seven days of meals, planned for you
- The inflammation tests worth running, with an hs-CRP retest at day 30
Free with your Dr. Axe account (email or Google), which also opens my field guide, Top 50 Healing Herbs & Essential Oils, with lemongrass among the 20 oils I trust most. You'll also get the protocol's short email series and the Dr. Axe newsletter; unsubscribe anytime.
Open the free protocol → →Did you know?
A shampoo made with 2% lemongrass oil still killed the yeast linked to dandruff after 6 weeks of storage, both at room temperature and at 113°F.11
In lab tests, lemongrass oil was more active against Candida yeast as a vapor than as a liquid.8
In one study from eastern Nepal, lemongrass leaf oil was 89.2% citral, while oil from palmarosa, a related grass, was 76.6% geraniol, a different compound.12
What is lemongrass oil?
Lemongrass oil is the essential oil steam-distilled from the leaves of lemongrass, Cymbopogon citratus or Cymbopogon flexuosus, and its main compound is citral, the source of its lemony scent.113 Citral makes up most of a typical lemongrass oil, though the exact blend shifts from plant to plant.814
Citral is a pair of closely related compounds, geranial and neral. In one oil from Algeria, geranial made up 42.2% and neral 31.5%,8 and three C. flexuosus cultivars grown in the same place ranged from 54.75% to 79.82% citral.14 Smaller amounts of geraniol and geranyl acetate round out the oil.1
The leaf and the oil are different products. Fresh lemongrass is a food: by weight, 100 grams of the raw leaf carries 723 mg of potassium and 5.22 mg of manganese.15 Brewed as a tea, it's a gentle traditional remedy, and in Brazil healthy volunteers who drank it once or daily for 2 weeks showed no harmful changes in blood tests, brain waves or heart tracings; a few had slight rises in two blood values that caused no symptoms.16 The oil is the leaf's aromatic part, distilled until it's 50 to 100 times as concentrated as the herb itself,5 so it carries the citral without the leaf's minerals. That concentration is why you use the oil by the drop and always dilute it on your skin.
The fresh or dried leaf, used in teas, soups and curries.9
A short history of lemongrass
Traditional healers across Asia, Africa and the Americas have used lemongrass leaf as a tea and a medicine: to relax spasms and ease pain, for rheumatism, as an antiseptic, and for nervous and stomach complaints and fevers.919
Chinese medicine reads the herb by its energetics. In my field guide, I describe lemongrass as cooling, pungent and lemony, working on digestion and the lungs, and best for heat, achy muscles and sluggish digestion; cooling plants suit people who run hot, with inflammation, irritability or flushing.5 Modern trials have tested the oil on several of those same jobs, from inflamed tissue to yeast and frayed nerves.104
What is lemongrass oil good for?
Lemongrass oil's best human evidence is for gum health, where a 0.25% rinse eased gum inflammation as well as chlorhexidine in a randomized trial, followed by dandruff, a common skin fungus and anxiety during dental work.23184 Lab and field tests support it as a mosquito repellent, and it has a long traditional record as a remedy for pain and rheumatism.20219
This page cites 11 human studies of lemongrass oil, led by five randomized trials for the gums and breath, and a 2024 review that gathered the human studies published from 2013 to 2022.22223172410 Each finding below names the product studied, from mouth rinses and gels to scalp tonics, creams and the scent itself.
| Use | Evidence | What was studied | What the research shows |
|---|---|---|---|
Gums, plaque and breath | Moderate | 0.25% rinse; 2% gel placed in gum pockets | Matched chlorhexidine for gum inflammation in 21 days; shallower gum pockets at 3 months22317 |
Dandruff | Emerging | Scalp tonics with 5%, 10% or 15% oil | 81% less dandruff in 14 days with the 10% tonic3 |
Tinea versicolor | Emerging | Cream and shampoo made with the oil | Cleared on lab tests in 60% of those who finished, after 40 days18 |
Anxiety and stress | Emerging | Inhaled oil | Lower anxiety, blood pressure and pulse during a deep dental cleaning425 |
Mosquito bites | Emerging | Oil worn on the legs; 1% solution and 15% creams | Far fewer bites overnight; at least half of bites deterred for 2 to 3 hours2120 |
Sore muscles and joints | Traditional | Massage with lemongrass oil | 25 of 38 reported no pain after foot massage26 |
Inflammation | Preclinical | Lemongrass oil and citral | Lower inflammation markers in human skin cells; less ear swelling in mice27288 |
How lemongrass oil works in your body
Here's what's happening when lemongrass oil meets yeast, step by step, and what it means for your scalp and skin:
Citral, the pair of compounds behind the lemony scent, makes up most of a typical lemongrass oil.814
In lab tests, citral killed 99.9% of Candida albicans yeast within 4 hours and blocked the thread-like growth the yeast uses to spread.29
Lab work points to a second job, calming inflammation signals. In human skin cells primed for inflammation, lemongrass oil lowered several markers of inflammation and tissue remodeling, in a lab study run by an essential-oil company's scientists.27 Citral switched off NF-κB, a central switch for the body's inflammatory signals, in mouse immune cells.28 In mice, 5 or 10 microliters of the oil applied to the ear cut chemically triggered swelling by 62.5% and 75%, in groups of four, while a diclofenac gel, a common anti-inflammatory drug, cut it 56.25%; and by mouth, 10 mg per kilogram eased paw swelling about as well as 50 mg per kilogram of diclofenac.8 Those findings fit the cooling, soothing role the herb has held in traditional medicine.95
Lemongrass oil benefits, ranked by evidence
Ranked by evidence, lemongrass oil does the most for your gums and breath, with encouraging results for the scalp and skin, calm and the mosquito season, and a long tradition for aching muscles and joints.
Healthier gums and fresher breath
Moderate evidenceHuman study5 randomized trials · 20 to 60 peopleA lemongrass oil rinse lowered gum inflammation 27.58% in 21 days, working as well as a chlorhexidine rinse in a randomized trial of 60 adults, and rinses and gels made with the oil helped deeper gum disease, braces wearers and bad breath in four more randomized trials.222231724 The gum section below has the details.
Study takeaway: a lemongrass rinse matched the standard medicated rinse for inflamed gums.
Less dandruff and skin fungus
Emerging evidenceHuman study2 randomized trials · 30 adults; 76 peopleA 10% lemongrass oil scalp tonic cut dandruff 81% in 14 days in a randomized trial of 30 adults that tested three strengths, and a cream and shampoo made with the oil cleared tinea versicolor on lab tests in 60% of the people who finished a 40-day randomized trial.318 See the dandruff and skin fungus section below.
Study takeaway: a lemongrass tonic cut dandruff by more than three-quarters in 2 weeks.
Calm under stress
Emerging evidenceHuman studyRandomized trial · 38 adults; controlled study · 40 menBreathing lemongrass oil lowered anxiety, blood pressure and pulse during a deep dental cleaning in a randomized trial of 38 adults, and a few drops of the scent eased anxiety and tension before a stressful test in a study of 40 men.425 The calm section below has the numbers and a chart.
Study takeaway: the scent eased anxiety within minutes.
Fewer mosquito bites
Emerging evidenceHuman studyField test · 68 volunteers, Burkina Faso; lab testsPeople who wore lemongrass oil on their legs overnight were bitten far less than those wearing a blank solution in a field test of 68 volunteers, and at the strongest blend tested, 2.5%, the researchers judged its protection comparable to a 30% DEET repellent; in lab tests a 1% solution deterred at least half of bites for 2 to 3 hours.2120 The mosquito section below has a spray you can make at home.
Study takeaway: a few hours of protection per application.
Sore muscles and achy joints
Traditional useTraditional useTraditional use · 1 study with no comparison group, 38 older adultsTraditional healers have long used lemongrass for pain and rheumatism, and in a small study of 38 older adults with rheumatoid arthritis, 25 reported no pain after a foot massage with lemongrass oil.926 The muscle section below has a rub to try.
Study takeaway: a traditional remedy for aching muscles and joints.
Calmer inflammation signals
PreclinicalIn vitro (lab)Lab studies in human skin cells and mouse immune cellsIn lab studies, lemongrass oil lowered inflammation markers in human skin cells, and citral switched off NF-κB, a central switch for inflammatory signals, in mouse immune cells.2728
Study takeaway: lab work points to how it may soothe inflamed tissue.
Where lemongrass oil has gone head to head with a standard treatment, it has held its own in most of the trials:
| Use | Lemongrass oil product | Standard treatment | How they compared |
|---|---|---|---|
Gum inflammation (60 adults, 21 days) | 0.25% rinse: gum score down 27.58% | 0.2% chlorhexidine rinse: down 24.98% | About equal; both beat cleaning alone2 |
Deep gum pockets (40 adults, 3 months) | 2% gel: 5.30 to 3.25 mm | 10% doxycycline gel: 5.35 to 3.15 mm | About equal17 |
Severe gum disease (45 adults, 3 months) | 0.25% rinse: 5.12 to 4.46 mm | 0.12% chlorhexidine rinse: 5.13 to 4.48 mm | About equal; both beat cleaning alone23 |
Mosquitoes (68 volunteers, overnight field test) | 2.5% oil on the legs, the strongest of five strengths | 30% DEET | Comparable, as the researchers reported21 |
Tinea versicolor (76 people, 40 days) | Cream and shampoo, about 0.125% oil: 60% cleared | 2% ketoconazole cream and shampoo: over 80% cleared | Ketoconazole cleared more18 |
Skin swelling (mice, groups of four) | 10 microliters of oil: swelling down 75% | Diclofenac gel: down 56.25% | No significant difference8 |
Is lemongrass oil good for your gums?
Yes. In a 21-day randomized trial of 60 adults with gingivitis, a 0.25% lemongrass oil rinse lowered gum inflammation 27.58%, working as well as a 0.2% chlorhexidine rinse, which lowered it 24.98%, and better than cleaning alone, at 8.71%.2 Rinses and gels made with the oil have also helped braces wearers, deeper gum disease and bad breath in randomized trials.22231724
The lead trial comes from a dental college in India. After a professional cleaning, 60 adults aged 25 to 45 with mild to moderate gingivitis kept brushing twice a day and were randomly assigned to swish for a minute twice a day with a 0.25% lemongrass oil rinse made in the college's pharmacology department, a 0.2% chlorhexidine rinse, or no rinse at all, 20 in each group. Plaque fell 35.57% with lemongrass, 35.24% with chlorhexidine and 24.31% with cleaning alone. Lemongrass beat cleaning alone on both gum inflammation and plaque, and it worked as well as chlorhexidine, the standard medicated rinse.2
Gum inflammation after 21 days: how much each group's gum score fell
The same rinse has done well in other mouths. In a randomized trial of 60 people wearing braces who had mild to moderate gingivitis, the lemongrass rinse group had lower plaque scores by day 14 and lower gum scores by day 21 than the chlorhexidine group.22 In a 3-month randomized trial from the same research team as the gingivitis study, 45 adults with severe periodontitis, gum disease that has opened pockets around the teeth, were split into three groups of 15. In the 15 who used the rinse after a cleaning, pockets went from 5.12 to 4.46 mm deep, against 5.11 to 5.03 mm with cleaning alone, and the gum's lost attachment to the teeth shrank from 5.31 to 4.75 mm, results similar to those with a 0.12% chlorhexidine rinse.23
Lemongrass also works as a gel placed right into those pockets. In a 3-month randomized trial of 40 adults with periodontitis, in which neither the patients nor the researchers knew who got which gel, a 2% lemongrass gel placed after a deep cleaning brought pockets from 5.30 to 3.25 mm deep, and a 10% doxycycline antibiotic gel brought them from 5.35 to 3.15 mm, so the two gels did about equally well. The lemongrass gel also cut counts of Porphyromonas gingivalis, a bacterium tied to gum disease, by about three-quarters.17
A lemongrass rinse has freshened breath, too. In a randomized trial of 20 healthy volunteers, in which neither the volunteers nor the researchers knew who got the lemongrass rinse or a placebo rinse, the lemongrass rinse lowered the sulfur gases behind bad breath by day 8, and the volunteers found it acceptable, though they asked for less spice in the flavor.24 A 2024 review of the human research found that lemongrass rinses and gels performed comparably to chlorhexidine and doxycycline in these mouth trials.10
To bring this home, choose a ready-made mouthwash that lists lemongrass oil, swish it for a minute and spit it out, and keep brushing twice a day, as the people in the rinse trials did. Don't put drops of the oil straight into your mouth. For more ways to care for your gums and breath, see how to get rid of bad breath, oil pulling with coconut oil and clove oil.
Does lemongrass oil help dandruff and skin fungus?
Yes, in the trials: a 10% lemongrass oil scalp tonic cut dandruff 81% in 14 days in a randomized trial of 30 adults that tested three strengths, and a cream and shampoo made with the oil cleared tinea versicolor, a common skin fungus, on lab tests in 60% of the people who finished a 40-day randomized trial.318
Dandruff is tied to Malassezia, a yeast that lives on the scalp, and lemongrass oil killed Malassezia furfur in lab tests.11 In Thailand, researchers made hair tonics with 5%, 10% or 15% lemongrass oil and tested them in a randomized trial of 30 adults aged 20 to 60 with dandruff. Each person used a lemongrass tonic on one side of the scalp and a tonic without the oil on the other, twice a day, and neither the volunteers nor the researchers knew which side got which. With the 5%, 10% and 15% tonics, dandruff fell 33%, 75% and 51% by day 7 and 52%, 81% and 74% by day 14, so the 10% tonic worked best.3 That tonic was a finished product made at 10%; at home, keep scalp blends to the 1% limit in the safety section. See how to get rid of dandruff and essential oils for hair for more scalp care.
Tinea versicolor is a yeast infection of the skin that leaves patches of lighter or darker skin. In a 40-day randomized trial of 76 people with tinea versicolor in Brazil, the lemongrass group used a cream twice a day and a shampoo three times a week, both made with lemongrass oil at about 0.125%. Of the 47 people assigned to lemongrass, 30 finished, and 60% of them were cleared of the fungus on lab tests, while over 80% of the 18 people who finished on the trial's ketoconazole cream and shampoo were cleared. Before the trial began, the lemongrass products were tested on 20 healthy volunteers, and none had a significant side effect.18
Tinea versicolor cleared in 60% of people who finished 40 days of lemongrass oil cream and shampoo
For other natural options for fungus on the skin, see how to get rid of fungal acne, athlete's foot and this homemade antifungal cream. For yeast overgrowth inside the body, see the Candida Cleanse protocol.
Can lemongrass oil ease anxiety and stress?
Yes. In a randomized trial of 38 adults having a deep dental cleaning, breathing lemongrass oil from a gauze pad lowered anxiety scores from 40.63 to 33.74, while scores rose from 37.21 to 39.58 with a water-dampened pad.4 In a study of 40 healthy men, a few drops of the scent eased anxiety and tension right before a stressful test.25
The dental trial ran in Iran. Forty adults having scaling and root planing, a deep cleaning below the gumline, were randomly assigned to a gauze pad near the nose moistened with diluted lemongrass oil (4 drops of oil in 100 mL of water) or with plain distilled water, and 38 were analyzed. Because of the smell, people could tell which pad they had. Anxiety, measured on a standard questionnaire before the cleaning and again in its last third, fell 6.9 points with lemongrass and rose 2.4 points with water, a gap unlikely to be chance.
Blood pressure and pulse moved the same way: systolic blood pressure dipped 1.4 mmHg with lemongrass and rose 4.6 with water, diastolic pressure dipped 0.8 and rose 4.3, and pulse fell about 5 beats a minute and rose about 3. Pain during the cleaning, oxygen levels and satisfaction were about the same in both groups. Everyone was patch-tested first, and no side effects were reported.4
Anxiety before and during deep dental cleaning, with and without lemongrass
A Brazilian study of 40 healthy men, split into four groups, tested the scent on its own. Right before a stressful color-word test given on camera, the men breathed in 3 or 6 drops of lemongrass oil, 3 drops of tea tree oil or 3 drops of water. Changes in heart rate and muscle tension during the test showed up in every group, but both lemongrass groups felt less anxious and tense right after breathing it in, and they recovered fully from the test's anxiety within 5 minutes, unlike the other groups.25
When a stressful appointment or a tense afternoon is coming, diffuse 3 to 4 drops, the amount my field guide gives, and start a few minutes ahead, since the volunteers felt calmer right after breathing it in.525 For more calming scents, see essential oils for anxiety, and for more on the practice itself, aromatherapy and natural remedies for anxiety.
Does lemongrass oil keep mosquitoes away?
Yes, for a few hours at a time. In lab tests, a 1% lemongrass oil solution kept at least half of mosquitoes from biting for 2 to 3 hours, and in a 2025 field test of 68 volunteers in Burkina Faso, those who wore lemongrass oil on their legs overnight were bitten far less than those wearing a blank solution.2021 Plant-oil repellents such as lemongrass usually protect completely for 2 to 4 hours, so reapply every couple of hours.32
In lab tests on a bird's skin, a 1% lemongrass oil solution and 15% lemongrass creams kept at least half of yellow fever mosquitoes from biting for 2 to 3 hours, comparable to a commercial repellent.20 In the Burkina Faso field test, volunteers wore lemongrass oil at 0.5% to 2.5% on their legs from 6 p.m. to 9 a.m., and every strength cut bites sharply; at 2.5%, the researchers judged protection comparable to a 30% DEET repellent.21 Oils from several lemongrass-family grasses protected completely against mosquito bites for 4 hours in lab and field tests in India.31 A 2026 review of 19 human repellent studies found that plant-oil repellents, lemongrass among them, usually protect completely for 2 to 4 hours.32
I suggest adding 5 drops of lemongrass oil to water and spraying it on to keep mosquitoes away.6 Use about 2 tablespoons (1 ounce) of water for those 5 drops. One drop is about 0.05 mL and an ounce is about 30 mL, so the spray stays under the 1% limit for skin. Shake the bottle before every spray, since the oil floats, mist it over exposed skin, and keep it away from your eyes and face. Find more recipes in homemade bug spray and help for bites in home remedies for mosquito bites.
Can lemongrass oil soothe sore muscles and joints?
Lemongrass is a traditional remedy for pain and rheumatism, and in one small study with no comparison group, 25 of 38 older adults with rheumatoid arthritis reported no pain after a foot massage with lemongrass oil.926 For a massage oil at home, mix 1 drop into each teaspoon of carrier oil, a 1% blend.5
I recommend lemongrass for muscle aches and cramps,6 and on my show, I've called it one of the best oils to use on a regular basis for your joints.33
In the massage study, at a clinic in Indonesia, 38 older adults with rheumatoid arthritis pain had foot massages with lemongrass oil, with no comparison group. Before, 24 of them rated their pain as moderate; afterward, 25 reported no pain at all.26
Rub the 1% blend from the quick answer above into the sore spot, and pair it with work from the inside.5 My Anti-Inflammatory Reset starts by taking away the fuel for inflammation: sugar, sweet drinks, fried food, seed oils, processed meat and alcohol, along with seven to eight hours of sleep.34 From there, build your plate from anti-inflammatory foods, and see muscle recovery, collagen for joints and essential oils for arthritis for more support.
Three markers that show your inflammation picture
A blood test can show how much inflammation your body is carrying and some of what feeds it. Go over your numbers and these targets with a practitioner.
- hs-CRP: Low-grade inflammation anywhere in the body. Dr. Axe's target is under 1.0 mg/L.
- Vitamin D: A nutrient involved in immune balance. Dr. Axe's target is 50 to 80 ng/mL.
- HbA1c: Your average blood sugar over about three months, since high blood sugar keeps inflammation simmering. Dr. Axe's target is under 5.4%.
See the cellular bloodwork panel
Have results? Analyze them free → →How to use lemongrass oil
Diffuse 3 to 4 drops, or dilute lemongrass oil to 1% for your skin, about 1 drop per teaspoon of carrier oil.5 Healthy adults can also take a drop or two by mouth in a spoonful of raw honey, a smoothie or soup.6
To diffuse it, add 3 to 4 drops to your diffuser and run it 30 to 60 minutes at a time, with breaks, in a ventilated room. Your nose adapts quickly, so the breaks keep the benefit.5 On your skin, dilute it to 1%; the safety section explains why and how to patch test first.
Can you take lemongrass oil internally?
Yes, in small amounts, if you're a healthy adult. In Ancient Remedies I wrote, "It's safe to ingest a drop or two."6 In the same book, I explain that oils from commonly eaten herbs, spices, roots and berries are safe to take by mouth at 1 or 2 drops,6 and lemongrass is a kitchen herb that goes into teas, soups and curries.9 The FDA lists lemongrass oil among the essential oils generally recognized as safe as food flavorings.13 Not every oil works this way: on my show, I've named eucalyptus, birch and wintergreen as oils not to take internally, while oils like ginger, peppermint and lemon can be taken in small doses.7
1 or 2 drops of a pure, single-ingredient oil labeled with its Latin name.6
In raw honey, a smoothie or soup, never plain water: oils don't dissolve in water, and undiluted drops can irritate your mouth and throat.
Occasional and short-term, adults only.
Stop at any dizziness, nausea or mouth irritation.6
On my show, I've shared that I make a lemongrass soup with coconut milk and add a few drops of the oil,35 and a drop or two also suits a recipe like this Secret Cucumber Detox Soup. Those are the same limits that apply to taking frankincense oil by mouth; the safety section covers pregnancy, nursing and children. As I've written, "If you experience any side effects, like dizziness or nausea, when using an oil, stop using it immediately."6
In mice, 21 days of the oil by mouth at up to 100 mg per kilogram of body weight a day showed no signs of harm to organs, blood or DNA, though no human trial has tested swallowing the oil yet.36 Per pound of body weight, that top dose is far more than a drop or two, which weighs about 60 milligrams.6
Ask Dr. Axe AI. Answers are grounded in this library, with sources shown.
How to buy and store lemongrass oil
Lemongrass oil comes from two species, and related grasses make different oils, so start with the label:
The Latin name: The label should name Cymbopogon citratus or Cymbopogon flexuosus, the two species the FDA lists for lemongrass oil.13
Pure and single-ingredient: The bottle should hold 100% lemongrass oil, certified organic when you can find it, with no added fragrance or perfume oil.65
A batch test report: Buy from a seller who can show what's in the oil, since its citral content shifts from plant to plant.14
A dark glass bottle: Choose one with the country of origin on the label.5
As I've written, "Synthetic oils are worthless at best and unhealthy at worst."6 Store the bottle cool, dark and tightly closed; most oils other than citrus keep 2 to 3 years. An oil that smells off has oxidized and can irritate your skin, so toss it.5 Citronella oil and palmarosa oil come from related grasses and are different oils, so check the Latin name before you buy.12
Lemongrass oil side effects & who should be careful
Lemongrass oil was well tolerated in the human trials, and its main risk is skin irritation or an allergic rash from citral, its main compound, so always dilute it to 1% and patch test first.537 Skip it in pregnancy, while nursing and for children.57
I list lemongrass as a skin irritant in Top 50 Healing Herbs & Essential Oils and cap it at 1% on the skin, about 1 drop per teaspoon of carrier oil, or 6 drops per ounce.5 Use a carrier such as jojoba, fractionated coconut, sweet almond or olive oil. Before wider use, patch test: apply your diluted blend to the inside of your forearm and wait 24 hours, and if you see redness or itching, skip the oil.5 Never put lemongrass oil on your skin undiluted, and keep it off broken skin and away from your eyes. For more on safe dilution with other oils, see essential oil safety.
| Use | Base | Lemongrass oil |
|---|---|---|
Massage or scalp oil | 1 teaspoon (5 mL) carrier oil | 1 drop5 |
Larger blend | 1 tablespoon (15 mL) carrier oil | 3 drops |
Bottle of body oil | 1 ounce (30 mL) carrier oil | 6 drops5 |
Mosquito spray | 2 tablespoons (1 ounce) water | 5 drops, about 0.8%; shake before each spray6 |
Diffuser | Your diffuser's water | 3 to 4 drops5 |
The reason for the care is citral, a known skin sensitizer that can trigger an allergic rash, and the allergen researchers name, along with geraniol, in reactions to lemongrass oil.3738 At a network of European skin clinics that patch tested 10,930 patients for essential-oil allergy from 2010 to 2019, 2.6% of the patients tested with lemongrass oil reacted to it, the second-highest rate of the 12 oils tested, after ylang ylang. These were people already being seen for skin problems, and massage therapists and cosmeticians were among the groups who reacted most often.39 If you've reacted to fragrances or other essential oils before, take the patch test seriously, and stop at the first sign of a rash. Contact dermatitis covers rashes like these.
Avoid lemongrass in pregnancy; that's the caution I give it in my field guide.5 In rats given citral by mouth during pregnancy, pregnancy losses rose slightly even at the lowest dose tested, 60 mg per kilogram a day, and higher doses slowed growth in the womb.40 No human safety data exist for the oil in pregnancy, so skip it in every form while you're pregnant, and skip it while nursing, too.5
On my show, I've said that strongly antimicrobial oils like oregano, and to a degree lemongrass, don't need to be used on children.7 Don't put lemongrass oil on children or give it to them by mouth, and keep the bottle locked away.5 If you take it by mouth yourself, follow the limits in the internal-use section above.
If a child swallows it: call Poison Control at 1-800-222-1222 right away.
Eyes: if oil gets in your eyes, flush them with plenty of clean water.
Pets: never apply it to a pet without a vet's guidance, since cats can't process many essential oils; see essential oils for pets.5
See a doctor promptly for a rash that spreads, blisters or swells, and call 911 for swelling of the face or lips or trouble breathing after any use.
The bottom line
Should you use lemongrass oil?
Yes. Lemongrass has been a kitchen herb and a traditional remedy for generations, and that kind of steady, everyday use carries weight with me, because it's people noticing over and over what helped them. Modern trials back it up: a lemongrass rinse matched chlorhexidine for inflamed gums, a scalp tonic cut dandruff, a cream and shampoo cleared a common skin fungus, and the scent eased anxiety during dental work. The gum results are the best established, and the skin, calm and mosquito findings are promising.
Dilute it to 1% for your skin, diffuse 3 to 4 drops, or take a drop or two in raw honey or soup for short stretches if you're a healthy adult. Skip it in pregnancy, while nursing and for children, and check who should be careful before you start. Used like that, it can support a body designed to heal.
Get the free Anti-Inflammatory Reset
A 30-day plan in four phases, the anti-inflammatory herbs and nutrients that work, ranked, seven days of meals and the inflammation tests worth running. Free with your Dr. Axe account (email or Google). You'll also get the protocol's short email series and the Dr. Axe newsletter; unsubscribe anytime. Have recent bloodwork? Analyze it free.
Open the free protocol → →Lemongrass oil: frequently asked questions
What is lemongrass oil good for?
Lemongrass oil's best-tested uses are gum health, dandruff, skin fungus and calm: in randomized trials, a 0.25% lemongrass rinse eased gum inflammation as well as chlorhexidine, a 10% scalp tonic cut dandruff 81% in 14 days, and breathing the scent lowered anxiety during a deep dental cleaning.234 It also keeps mosquitoes off for a few hours, and it has a long traditional record as a remedy for pain and rheumatism.209
Is lemongrass oil good for your gums?
Yes: in a 21-day randomized trial of 60 adults with gingivitis, a 0.25% lemongrass oil rinse lowered gum inflammation 27.58%, working as well as a chlorhexidine rinse and better than cleaning alone.2 Use a ready-made mouthwash that lists lemongrass oil, swish and spit, and never put undiluted drops in your mouth.
Does lemongrass oil help with dandruff?
Can lemongrass oil help skin fungus?
Does lemongrass oil help with anxiety?
Does lemongrass oil keep mosquitoes away?
Yes, for a few hours: in lab tests a 1% lemongrass oil solution deterred at least half of mosquito bites for 2 to 3 hours, and volunteers who wore the oil overnight in a field test were bitten far less, and at the 2.5% strength, the researchers judged protection comparable to a 30% DEET repellent.2021 Reapply every couple of hours.32
Does lemongrass oil help sore muscles?
How do you dilute lemongrass oil?
Dilute it to 1% at most: about 1 drop per teaspoon of carrier oil, or 6 drops per ounce, in jojoba, fractionated coconut, sweet almond or olive oil.5 Patch test the blend on your inner forearm and wait 24 hours before wider use.
Can you put lemongrass oil directly on your skin?
Can you take lemongrass oil internally?
Yes, in small amounts for healthy adults: I've written that a drop or two is safe to ingest,6 mixed into a spoonful of raw honey, a smoothie or soup rather than water, and taken occasionally and short-term. Skip it during pregnancy, while nursing and for children, and stop at any mouth or stomach irritation, dizziness or nausea.
How many drops of lemongrass oil go in a diffuser?
Use 3 to 4 drops, and run the diffuser 30 to 60 minutes at a time, with breaks, in a ventilated room.5
Is lemongrass oil the same as lemongrass tea?
Is lemongrass oil the same as citronella or lemon oil?
Is lemongrass oil safe during pregnancy?
Is lemongrass oil safe for kids?
Is lemongrass oil safe for pets?
Don't apply it to a pet without a vet's guidance, because cats can't process many essential oils.5 See essential oils for pets before you use any oil around animals.
Freshness & update log
October 7, 2026 — Rewrote the page in full. The previous version listed 18 benefits, including fever, colds, cholesterol, stomach protection and menstrual cramps, without a reference list; described lemongrass oil as a source of vitamins and minerals; advised diluting it 1:1 with coconut oil and adding a drop to water; and said, without a source, that inhaling it had caused lung problems. This version ranks the benefits by human trials for gums, dandruff, tinea versicolor, anxiety and mosquitoes, each labeled with its design and size; adds a Dr. Axe Score (6.1) with an interaction check, three charts and a step diagram; explains that the vitamins and minerals belong to the leaf, not the oil; sets Dr. Axe's 1% limit for the skin with a patch test; gives his internal-use guidance with raw honey, a smoothie or soup; adds cautions for pregnancy, nursing, children and pets; and removes the benefits and the lung claim that lacked human research, with 40 references.
October 8, 2026 (second update) — Added a table comparing lemongrass oil with the standard treatment in each head-to-head trial (chlorhexidine and doxycycline for the gums, DEET for mosquitoes, ketoconazole for tinea versicolor, and diclofenac gel in mice); added the field test's DEET comparison and oil strengths to the mosquito section, its ranked card and both FAQ copies; added quick answers to the mosquito and muscle sections, a dilution table in the safety section, and a FAQ on sore muscles; matched Dr. Axe's show line on lemongrass to his words (joints, from the episode transcript); added his show list of oils not to take internally beside the internal-use guidance, and "short-term" to the by-mouth line in the summary, quick facts and bottom line; named the 0.12% chlorhexidine rinse in the severe gum disease trial; added the diclofenac gel result to the inflammation paragraph; added in-text links to the field guide, the Candida Cleanse protocol, frankincense, ginger, peppermint and clove oils, athlete's foot and collagen for joints, and removed repeated links; updated the read time. After an independent re-score, tied the DEET comparison to the 2.5% strength in the ranked card, mosquito section, comparison table and both FAQ copies; noted the slight, symptom-free blood-value rises in the lemongrass tea study; added a stressful-appointment diffusing step tied to the calm studies; set the internal-use steps as a checklist; trimmed a repeated dilution line in the muscle section; offered the field guide in the top sign-up box; and tied HbA1c to inflammation.
2023 — Previous version published.
References
- Mukarram M, Choudhary S, Khan MA, Poltronieri P, Khan MMA, Ali J, et al. Lemongrass Essential Oil Components with Antimicrobial and Anticancer Activities. Antioxidants (Basel). 2021;11(1):20. doi:10.3390/antiox11010020
- Dany SS, Mohanty P, Tangade P, Rajput P, Batra M. Efficacy of 0.25% Lemongrass Oil Mouthwash: A Three Arm Prospective Parallel Clinical Study. J Clin Diagn Res. 2015;9(10):ZC13-7. doi:10.7860/JCDR/2015/14465.6581
- Chaisripipat W, Lourith N, Kanlayavattanakul M. Anti-dandruff Hair Tonic Containing Lemongrass (Cymbopogon flexuosus) Oil. Forsch Komplementmed. 2015;22(4):226-9. doi:10.1159/000432407
- Maybodi FR, Herandi V, Vaezpour MS. Effect of aromatherapy with lemongrass (Cymbopogon citratus) on the anxiety of patients undergoing scaling and root planning: a randomized clinical trial. BMC Complement Med Ther. 2025;25(1):100. doi:10.1186/s12906-025-04834-w
- Axe J. Top 50 Healing Herbs & Essential Oils: A Field Guide to God's Pharmacy (Vol. 05, The Natural Pharmacy, 2026 edition). DrAxe.com protocol; 2026 (introduction, the 20 essential oils he trusts most; "How to use this guide," warming and cooling key; "Essential oil safety & dilution," p. 39; "Safety & interactions"; Oil 19, Lemongrass, p. 49; "Build your home apothecary" buying and storage notes).
- Axe J. Ancient Remedies: Secrets to Healing with Herbs, Essential Oils, CBD, and the Most Powerful Natural Medicine in History. Little, Brown Spark (Hachette Book Group); 2021 (chapter "The Power of Essential Oils": oils from commonly consumed herbs, spices, roots and berries taken by mouth at 1 or 2 drops, about 60 milligrams, the stop rule for dizziness or nausea and "Synthetic oils are worthless at best and unhealthy at worst," p. 146; the Lemongrass entry, p. 155).
- Axe J. Dangers of Essential Oils: Top 10 Essential Oil Mistakes to Avoid | Dr. Josh Axe. The Dr. Josh Axe Show. 2017 (oils not to take internally and oils fine in small doses, at 2:14-2:40; oils for children, lemongrass named, at 7:10-7:43; YouTube: https://www.youtube.com/watch?v=1vuLggcLDLg&t=430s).
- Boukhatem MN, Ferhat MA, Kameli A, Saidi F, Kebir HT. Lemon grass (Cymbopogon citratus) essential oil as a potent anti-inflammatory and antifungal drugs. Libyan J Med. 2014;9(1):25431. doi:10.3402/ljm.v9.25431
- Shah G, Shri R, Panchal V, Sharma N, Singh B, Mann AS. Scientific basis for the therapeutic use of Cymbopogon citratus, stapf (Lemon grass). J Adv Pharm Technol Res. 2011;2(1):3-8. doi:10.4103/2231-4040.79796
- Kusuma IY, Perdana MI, Vágvölgyi C, Csupor D, Takó M. Exploring the Clinical Applications of Lemongrass Essential Oil: A Scoping Review. Pharmaceuticals (Basel). 2024;17(2):159. doi:10.3390/ph17020159
- Wuthi-Udomlert M, Chotipatoomwan P, Panyadee S, Gritsanapan W. Inhibitory effect of formulated lemongrass shampoo on Malassezia furfur: a yeast associated with dandruff. Southeast Asian J Trop Med Public Health. 2011;42(2):363-9.
- Dangol S, Poudel DK, Ojha PK, Maharjan S, Poudel A, Satyal R, et al. Essential Oil Composition Analysis of Cymbopogon Species from Eastern Nepal by GC-MS and Chiral GC-MS, and Antimicrobial Activity of Some Major Compounds. Molecules. 2023;28(2):543. doi:10.3390/molecules28020543
- US Food and Drug Administration. 21 CFR 182.20, Essential oils, oleoresins (solvent-free), and natural extractives (including distillates) that are generally recognized as safe (lists "Lemon grass, Cymbopogon citratus DC. and Cymbopogon lexuosus Stapf"). Electronic Code of Federal Regulations. Accessed October 7, 2026.
- Raghuvanshi N, Gupta B, Joshi V, Bisht SS, Manikpuri M, Shukla K, et al. Influence of Essential Oil Composition on Antioxidant and Antibacterial Activities of Three Cultivars of Cymbopogon Flexuosus: In Vitro and In Silico Study. Chem Biodivers. 2025;22(1):e202400966. doi:10.1002/cbdv.202400966
- US Department of Agriculture, Agricultural Research Service. Lemon grass (citronella), raw. FoodData Central, SR Legacy, FDC ID 168573 (NDB 11972); values read from the FDC portal record on October 7, 2026 (100 g: potassium 723 mg, manganese 5.22 mg, iron 8.17 mg, folate 75 µg, vitamin A 0 µg RAE).
- Leite JR, Seabra Mde L, Maluf E, Assolant K, Suchecki D, Tufik S, et al. Pharmacology of lemongrass (Cymbopogon citratus Stapf). III. Assessment of eventual toxic, hypnotic and anxiolytic effects on humans. J Ethnopharmacol. 1986;17(1):75-83. doi:10.1016/0378-8741(86)90074-7
- Mittal P, Gokhale ST, Manjunath S, Al-Qahtani SM, Magbol MA, Nagate RR, et al. Comparative Evaluation of Locally Administered 2% Gel Fabricated from Lemongrass Polymer and 10% Doxycycline Hyclate Gel as an Adjunct to Scaling and Root Planing in the Treatment of Chronic Periodontitis-A Randomized Controlled Trial. Polymers (Basel). 2022;14(14):2766. doi:10.3390/polym14142766
- Carmo ES, Pereira Fde O, Cavalcante NM, Gayoso CW, Lima Ede O. Treatment of pityriasis versicolor with topical application of essential oil of Cymbopogon citratus (DC) Stapf - therapeutic pilot study. An Bras Dermatol. 2013;88(3):381-5. doi:10.1590/abd1806-4841.20131800
- Avoseh O, Oyedeji O, Rungqu P, Nkeh-Chungag B, Oyedeji A. Cymbopogon species; ethnopharmacology, phytochemistry and the pharmacological importance. Molecules. 2015;20(5):7438-53. doi:10.3390/molecules20057438
- Oyedele AO, Gbolade AA, Sosan MB, Adewoyin FB, Soyelu OL, Orafidiya OO. Formulation of an effective mosquito-repellent topical product from lemongrass oil. Phytomedicine. 2002;9(3):259-62. doi:10.1078/0944-7113-00120
- Konaté H, Namountougou M, Amara MF, Balboné M, Gnissi S, Kouadio KWU, et al. Cymbopogon citratus and Lippia multiflora essential oils as alternative repellent to DEET against Anopheles gambiae s.l. in Bobo-Dioulasso, Burkina Faso. Sci Rep. 2025;15(1):42457. doi:10.1038/s41598-025-26462-7
- Wasey F, Tantray S, Ahluwalia R, Khan MS. Comparative Evaluation of 0.25% Lemongrass Oil Mouthwash and 0.2% Chlorhexidine Mouthwash in Fixed Orthodontic Patients Suffering from Gingivitis. J Contemp Dent Pract. 2023;24(6):396-402. doi:10.5005/jp-journals-10024-3516
- Subha DS, Pradeep T. Periodontal Therapy with 0.25%Lemongrass Oil Mouthwash in Reducing Risk of Cardiovascular Diseases: A 3-Arm Prospective Parallel Experimental Study. Ethiop J Health Sci. 2017;27(5):531-540. doi:10.4314/ejhs.v27i5.12
- Satthanakul P, Taweechaisupapong S, Paphangkorakit J, Pesee M, Timabut P, Khunkitti W. Antimicrobial effect of lemongrass oil against oral malodour micro-organisms and the pilot study of safety and efficacy of lemongrass mouthrinse on oral malodour. J Appl Microbiol. 2015;118(1):11-7. doi:10.1111/jam.12667
- Goes TC, Ursulino FR, Almeida-Souza TH, Alves PB, Teixeira-Silva F. Effect of Lemongrass Aroma on Experimental Anxiety in Humans. J Altern Complement Med. 2015;21(12):766-73. doi:10.1089/acm.2015.0099
- Aisyah S, Uliyah M, Ulfaiza M. The Effect of Foot Massage Using Lemongrass Oil on Reducing the Intensity of Rheumatoid Arthritis Pain in the Elderly at the Aisyiyah Clinic, Ambulu Sub-district, Jember Regency. In: Proceedings of the 2nd International Conference of Health Innovation and Technology (ICHIT 2022). Atlantis Press; 2023:148-158. doi:10.2991/978-94-6463-202-6_18
- Han X, Parker TL. Lemongrass (Cymbopogon flexuosus) essential oil demonstrated anti-inflammatory effect in pre-inflamed human dermal fibroblasts. Biochim Open. 2017;4:107-111. doi:10.1016/j.biopen.2017.03.004
- Lee HJ, Jeong HS, Kim DJ, Noh YH, Yuk DY, Hong JT. Inhibitory effect of citral on NO production by suppression of iNOS expression and NF-kappa B activation in RAW264.7 cells. Arch Pharm Res. 2008;31(3):342-9. doi:10.1007/s12272-001-1162-0
- Leite MC, Bezerra AP, de Sousa JP, Guerra FQ, Lima Ede O. Evaluation of Antifungal Activity and Mechanism of Action of Citral against Candida albicans. Evid Based Complement Alternat Med. 2014;2014:378280. doi:10.1155/2014/378280
- Silva Cde B, Guterres SS, Weisheimer V, Schapoval EE. Antifungal activity of the lemongrass oil and citral against Candida spp. Braz J Infect Dis. 2008;12(1):63-6. doi:10.1590/s1413-86702008000100014
- Tyagi BK, Shahi AK, Kaul BL. Evaluation of repellent activities of Cymbopogon essential oils against mosquito vectors of Malaria, Filariasis and Dengue Fever in India. Phytomedicine. 1998;5(4):324-9. doi:10.1016/S0944-7113(98)80073-1
- Faridah L, Nurhakim RA, Astuti RRUNW, Melanie, Rohmawaty E, Rachmawati Y, et al. Effectiveness of mosquito repellents for human: A systematic review of human-based studies. Acta Trop. 2026;280:108182. doi:10.1016/j.actatropica.2026.108182 (corrigendum: Acta Trop. 2026;280:108206)
- Axe J. 10 Keys to Relieve Pain and Inflammation. The Dr. Josh Axe Show. 2017 (lemongrass oil at 15:10-15:28; YouTube: https://www.youtube.com/watch?v=WFMOBT_ucW8&t=910s).
- Axe J. Anti-Inflammatory Reset: 30-day protocol. DrAxe.com. 2026.
- Axe J. 8 Keys to Heal Hypothyroidism. The Dr. Josh Axe Show. 2017 (lemongrass soup with lemongrass oil and coconut milk at 19:55-20:22; YouTube: https://www.youtube.com/watch?v=S5r5JQCNuGM&t=1195s).
- Costa CA, Bidinotto LT, Takahira RK, Salvadori DM, Barbisan LF, Costa M. Cholesterol reduction and lack of genotoxic or toxic effects in mice after repeated 21-day oral intake of lemongrass (Cymbopogon citratus) essential oil. Food Chem Toxicol. 2011;49(9):2268-72. doi:10.1016/j.fct.2011.06.025
- Lalko J, Api AM. Citral: identifying a threshold for induction of dermal sensitization. Regul Toxicol Pharmacol. 2008;52(1):62-73. doi:10.1016/j.yrtph.2008.01.006
- de Groot A, Schmidt E. Essential Oils, Part V: Peppermint Oil, Lavender Oil, and Lemongrass Oil. Dermatitis. 2016;27(6):325-332. doi:10.1097/DER.0000000000000218
- Geier J, Schubert S, Reich K, Skudlik C, Ballmer-Weber B, Brehler R, et al. Contact sensitization to essential oils: IVDK data of the years 2010-2019. Contact Dermatitis. 2022;87(1):71-80. doi:10.1111/cod.14126
- Nogueira AC, Carvalho RR, Souza CA, Chahoud I, Paumgartten FJ. Study on the embryofeto-toxicity of citral in the rat. Toxicology. 1995;96(2):105-13. doi:10.1016/0300-483x(94)02915-h
This article is for educational purposes. See our medical disclaimer.


