Essential Oils & Aromatherapy During Pregnancy

Essential oils are concentrated plant extracts, and “natural” doesn’t automatically mean risk-free in pregnancy — some oils are best avoided, while many popular ones are considered fine in normal, moderate use. As with herbal teas, this is a category where checking each specific oil matters more than a single blanket rule.

Oils generally best avoided

A number of essential oils are generally advised against during pregnancy, mainly because some are associated with stimulating uterine contractions or have limited safety data in pregnancy specifically. These include clary sage, rosemary, cinnamon, basil, juniper berry, and pennyroyal. Clary sage in particular is sometimes used later in pregnancy under professional midwifery guidance specifically to help stimulate labour — which is exactly why it’s not something to use casually earlier in pregnancy.

Oils generally considered fine in moderation

Lavender, chamomile, mandarin, ylang ylang, frankincense, and tea tree are among the essential oils more commonly considered acceptable for general use during pregnancy, used as normal — a few drops in a diffuser, or properly diluted in a carrier oil for topical use. Peppermint oil is generally considered fine too and is sometimes used for nausea, though strong minty smells don’t suit everyone during pregnancy regardless of safety.

How aromatherapy is typically used

Diffusers and inhalation are the lowest-exposure way to use essential oils, and generally the safest approach if you want to use aromatherapy during pregnancy — a few drops in a diffuser in a well-ventilated room, used for a limited time rather than continuously all day.

Topical use (added to a carrier oil for massage, for example) involves more direct absorption and should always be properly diluted — essential oils should never be applied undiluted (neat) to the skin, pregnant or not, but this matters even more given the added caution around pregnancy. A qualified aromatherapist with specific pregnancy training will know appropriate dilution ratios and which oils to avoid.

Never taken internally. Essential oils are not intended for ingestion, and this applies in pregnancy as it does generally — internal use of essential oils should only ever happen under specific professional guidance, not as a general home remedy.

Aromatherapy massage during pregnancy

Many spas and therapists offer pregnancy-specific aromatherapy massage, using oil blends and positioning adapted for pregnancy. If booking a massage, mention you’re pregnant so the therapist can select appropriate oils and avoid the ones listed above, and avoid deep abdominal massage specifically.

First trimester caution

As with several other categories on this site (hair dye, for example), some sources suggest being more cautious with any essential oil use in the first trimester specifically, when major organ development is occurring, even for oils generally considered fine later in pregnancy. This is a precautionary approach rather than one based on strong specific evidence of harm from moderate use of the “generally fine” oils listed above.

The general approach

If you enjoy aromatherapy, most common oils used in moderation via a diffuser are fine — check any specific oil you’re unsure about against the avoid list above, dilute properly for topical use, and choose a pregnancy-trained therapist if booking a professional treatment.