Most essential oils are safe during pregnancy when used correctly—diluted, inhaled, or diffused in moderation. However, some oils like clary sage, rosemary, and cinnamon bark should be avoided entirely, and ingesting any essential oil during pregnancy is a hard no. Always check with your healthcare provider before starting any new aromatherapy routine.
You’re pregnant, your back aches, your head hurts, and the smell of last night’s dinner is somehow still unbearable at 9 AM. It’s no wonder so many expecting moms turn to essential oils for a little natural relief. But with so much conflicting advice out there—one source says clary sage is fine, another says stay far away—it can be hard to know what’s actually safe.
Here’s the good news: most essential oils are perfectly fine to use during pregnancy, as long as you use them the right way. The key is knowing which oils to reach for, which ones to put back on the shelf, and how to apply them safely. This guide breaks it all down in plain language, backed by medical sources, so you can feel confident about your choices.
Why Essential Oils Deserve Extra Attention During Pregnancy
Essential oils aren’t just nice-smelling liquids. They’re highly concentrated, biologically active compounds derived from plants—and that potency is exactly why they deserve a little more attention during pregnancy.
When you inhale essential oils or apply them topically, small amounts can enter your bloodstream. According to the Bumps (Best Use of Medicines in Pregnancy) resource, essential oils absorbed through the skin can enter the bloodstream, with amounts increasing when a large area of skin is massaged or the skin is broken. Since your body is working overtime to support a growing baby, what goes in matters more than ever.
There’s also the sensitivity factor. Pregnancy can make your sense of smell significantly more acute. An oil that felt relaxing before might suddenly feel overwhelming—or even trigger nausea. Your skin can also become more reactive, so what worked pre-pregnancy might cause irritation now.
None of this means you need to toss your diffuser. It just means a little more care goes a long way.
Which Essential Oils Are Generally Safe During Pregnancy?
The following oils are widely considered safe for use during pregnancy when properly diluted and used in moderation. According to Moreland OB-GYN, these are among the most commonly recommended:
- Lavender – Perhaps the most well-researched oil for pregnancy. Studies have found that lavender aromatherapy can decrease anxiety during labor and may improve sleep quality. According to Mayo Clinic’s certified nurse-midwife Emily Sisco, mixing lavender oil with water and spraying it on a pillow is a gentle way to promote rest.
- Ginger – A go-to for nausea and morning sickness. Diffusing or inhaling ginger oil may help take the edge off that queasy feeling.
- Frankincense – Known for its calming and grounding properties, frankincense is often used to ease stress and support emotional balance.
- German or Roman Chamomile – Both varieties are gentle and commonly used to soothe tension and promote relaxation.
- Lemon, Grapefruit, Mandarin, Tangerine, and Wild Orange – These citrus oils are generally safe and uplifting, though some (particularly cold-pressed citrus oils) can be phototoxic. More on that shortly.
- Rose or Rosewood – Like lavender, rose oil has been studied for its ability to ease anxiety during labor.
- Neroli and Ylang Ylang – Both are calming oils commonly used to support emotional well-being.
- Eucalyptus and Cardamom – Often used to relieve congestion and respiratory discomfort, which can be common during pregnancy.
- Sandalwood and Petitgrain – Grounding, gentle oils that are widely considered safe when used appropriately.
That said, safety can also depend on the trimester and method of use. Some oils are only recommended from the second trimester onward, which is another reason to run your choices by your midwife or OB first.
Essential Oils to Avoid During Pregnancy
Now for the oils to steer clear of. According to Moreland OB-GYN, the following should be avoided during pregnancy:
- Clary Sage – Commonly flagged because it can stimulate uterine contractions, which poses a risk of premature labor.
- Rosemary – Despite being a kitchen staple, rosemary oil can raise blood pressure and potentially stimulate contractions.
- Cinnamon Bark – A strong uterine stimulant and skin irritant, cinnamon bark oil is consistently on the avoid list.
- Clove – Another potent oil that’s too strong for use during pregnancy.
- Thyme – Can act as a uterine stimulant, making it one to skip.
- Basil, Sage, and Tarragon – All three contain compounds that may stimulate the uterus.
- Wintergreen – Contains methyl salicylate, which is related to aspirin. According to Bumps, aspirin-related medicines aren’t recommended after 20 weeks of pregnancy, so wintergreen oil should be treated with the same caution.
- Camphor, Birch, Pennyroyal, Wormwood, Mugwort, Rue, Tansy, Thuja, Oak Moss, Hyssop, Nutmeg, Cumin, Aniseed, and Parsley Seed or Leaf – All on the avoid list due to potential risks including uterine stimulation, toxicity, or other concerns.
You might notice that some oils appear on both “safe” and “avoid” lists depending on the source—peppermint is a good example. Mayo Clinic notes that peppermint can help with headaches and nausea, while some OB-GYNs recommend avoiding it due to its potency. This is why consulting your own provider is so important. Every pregnancy is different, and what’s right for one person may not be right for another.
How to Use Essential Oils Safely During Pregnancy
Knowing which oils are safe is only half the equation. How you use them matters just as much.
What’s the safest way to use essential oils during pregnancy?
Diffusing or inhaling essential oils is generally the lowest-risk method of use during pregnancy. Exposure is minimal compared to topical or internal use, and you can easily stop if a scent becomes overwhelming.
Here are a few guidelines to keep in mind:
Start low and go slow. Emily Sisco, CNM at Mayo Clinic Health System, recommends starting with just one drop and increasing to three to five drops based on your tolerance. You can place the oil on a tissue or cotton ball for easy inhalation—and easy removal if the smell becomes too much.
Always dilute before applying to skin. Applying undiluted essential oils directly to the skin during pregnancy is not recommended. You’ll want to mix them with a carrier oil like coconut, almond, or jojoba oil first. According to the International Childbirth Education Association (ICEA), pregnant women should stay at a 2% or lower dilution when using essential oils topically. That works out to roughly 12 drops of essential oil per ounce (30 mL) of carrier oil—though staying closer to 1% during pregnancy is a conservative and sensible choice.
Don’t diffuse continuously. Using a diffuser in a well-ventilated room for short periods is fine. But running it for hours on end can be too much, especially when your senses are heightened. Take breaks and trust your body’s signals.
Test a small patch of skin first. Because pregnancy can make skin more reactive, always do a patch test before applying an oil blend to a larger area.
What about essential oil baths during pregnancy?
Adding a few drops of a safe essential oil to a warm bath can be relaxing, but there are a couple of things to watch out for. Essential oils don’t fully dissolve in water, which means they can sit on the surface and cause skin irritation. Mixing them with a carrier oil, whole milk, or a dispersant before adding them to the bath helps reduce this risk. Also, keep the water warm rather than hot—hot baths themselves can be problematic during pregnancy.
Can you use essential oil products on your skin during pregnancy?
The Bumps resource notes that the level of essential oils found in most everyday perfumes, cosmetics, skincare products, and toiletries is usually low—and therefore very unlikely to harm your baby. So that lavender-scented lotion you love is almost certainly fine.
However, products containing synthetic fragrance are a different story. As explained by Dr. Sarah Villafranco, MD, founder of Osmia Skincare and a board-certified emergency medicine physician, synthetic fragrance often includes phthalates—known endocrine disruptors associated with hormone disruption and developmental concerns. These ingredients don’t have to be individually listed on a label; they can all hide behind the single word “fragrance.” Choosing products made with properly diluted, high-quality essential oils is generally the more transparent option.
What About the First Trimester?
Extra caution is the name of the game during the first trimester. This is when fetal development is most rapid and most sensitive to external influences. Moreland OB-GYN specifically notes that caution should be exercised during “the flurry of development in your first trimester.”
During these early weeks, sticking to gentle inhalation rather than topical application is a smart move. Keep dilutions low, avoid the oils on the “do not use” list entirely, and check in with your provider before adding anything new to your routine.
One Rule That’s Non-Negotiable: Never Ingest Essential Oils During Pregnancy
This one’s firm across all sources. The Mayo Clinic, Bumps, and multiple other medical resources agree: do not ingest essential oils during pregnancy or while breastfeeding. Ingestion results in the greatest level of exposure for both you and your baby, and there simply isn’t enough research to confirm it’s safe. Undiluted essential oils can be toxic when swallowed—this applies outside of pregnancy too, but the risks are amplified when you’re expecting.
If you ever accidentally swallow an essential oil, the Bumps resource advises seeking immediate medical advice.
A Note on Newborns
If you’re planning to continue using essential oils after your baby arrives, keep this in mind: most essential oils are too potent for babies under one year of age. Their skin is thinner, their immune systems are still developing, and their bodies are far more sensitive to concentrated plant compounds. Stick to unscented products for newborns, and only introduce essential oils gradually and with professional guidance as your child gets older.
Finding Your Way Through the Noise
The world of essential oils during pregnancy can feel confusing, partly because the research is still evolving and opinions vary even among professionals. What helps is having a solid baseline of knowledge—which oils are generally considered safe, which to avoid, and how to use them responsibly—combined with an open conversation with your own healthcare provider.
Your midwife or OB understands your specific health history, risk factors, and pregnancy needs. They’re your best resource for personalizing these general guidelines to your situation. Don’t hesitate to bring up essential oils at your next appointment, especially if you’re dealing with nausea, sleep issues, anxiety, or muscle discomfort.
Used thoughtfully, essential oils can be a genuinely lovely part of your pregnancy self-care routine. The lavender on your pillow, the ginger oil that tames morning sickness, the chamomile you diffuse before bed—these small comforts can make a real difference. You just want to make sure they’re working with your body, not against it.