Are essential oils just pretty-smelling plant extracts, or do they actually affect our health? They're said to calm moods, ease pain, improve sleep and lower blood pressure. But does aromatherapy work? Here's what researchers and medical experts have found, plus how to use essential oils safely.
What Is Aromatherapy?
Aromatherapy is the therapeutic use of essential oils, concentrated aromatic extracts from flowers, leaves, bark, roots and fruit peels. The National Center for Complementary and Integrative Health (part of the NIH) provides an evidence overview in its aromatherapy fact sheet.
How essential oils are made
- Steam distillation: steam passes through flowers, leaves or bark and carries the aromatic compounds out (lavender, eucalyptus, chamomile).
- Cold pressing: oils are pressed from citrus peels (orange, lemon, bergamot).
Essential oils contain compounds such as linalool and linalyl acetate (lavender), limonene (citrus) and pinene (pine and conifers). These give each oil its scent and many of its effects.
How Does Aromatherapy Work?
Essential oils work in two main ways:
- Inhalation: Scent molecules stimulate receptors in the nose, which send signals directly to the limbic system, the brain region that governs emotion, memory and stress responses. That's why a scent can change your mood almost instantly.
- Topical application: Diluted in a carrier oil or lotion, essential oils are absorbed through the skin. Massage adds its own relaxing benefits.
Does Aromatherapy Work? What the Evidence Says
The Veterans Affairs evidence map
The U.S. Department of Veterans Affairs commissioned a comprehensive review of the research: Aromatherapy and Essential Oils: A Map of the Evidence. It found moderate confidence that aromatherapy is potentially effective for:
- Pain during labor and childbirth
- Blood pressure reduction in hypertension
- Stress, depression and sleep in hemodialysis patients
- Stress in healthy adults
- Anxiety before surgery
- Sleep quality in various populations
Essential oils for anxiety
Lavender is the best-studied essential oil for anxiety:
- A 2019 meta-analysis in *Phytomedicine*, Effects of lavender on anxiety, found that lavender significantly reduced anxiety.
- A 2023 systematic review found anxiety-reducing effects of lavender essential oil inhalation across a range of settings.
- A meta-analysis of randomized trials found aromatherapy effective for reducing preoperative anxiety in adults.
Aromatherapy for sleep
- A 2021 meta-analysis in *Complementary Therapies in Medicine* found that aromatherapy improved sleep quality in adults and the elderly.
- A 2024 meta-analysis found aromatherapy improved sleep quality in older adults.
The short answer
Yes, aromatherapy can help with stress, anxiety, mood and sleep, and it may ease some kinds of pain. It works best as a complement to other care, not a standalone cure. Researchers continue to study how specific compounds in each oil affect different conditions.
Popular Essential Oils and Their Benefits
- Lavender: anxiety, stress, sleep
- Chamomile: relaxation, sleep, soothing skin
- Bergamot and orange: mood and stress
- Peppermint: headache relief, alertness
- Eucalyptus: breathing comfort
- Ginger: warmth and muscle comfort
- Pine and conifer oils: the "forest" scent associated with relaxation (see Shinrin Yoku: The Benefits of Forest Bathing)
How to Use Essential Oils Safely
- Always dilute for skin use. Undiluted essential oils can irritate or sensitize skin. Use products formulated with safe levels, or dilute in a carrier oil.
- Patch test any new oil or product.
- Diffuse in moderation in a well-ventilated room, and be mindful of pets, since some oils are toxic to cats and dogs.
- Avoid citrus oils on skin before sun exposure. Some cause photosensitivity.
- Don't ingest essential oils unless directed by a qualified professional.
- Talk to your doctor if you're pregnant, nursing, have a medical condition or take medications. Essential oils can interact with some medicines.
For severe anxiety, depression, sleep disorders or chronic pain, always seek medical care. Aromatherapy can support treatment but shouldn't replace it.
The Skin-Brain Connection
Aromatherapy is one example of a broader idea: what touches your skin and senses affects your brain. Learn more in How Stress Affects Your Skin: The Skin-Brain Connection.
Bel Essence Products With Calming Essential Oils
- Calm-Soothe-Sleep Magnesium Body Butter: lavender essential oil and magnesium in a silky, non-greasy body butter. Massage it in at bedtime to relax muscles, soften skin and unwind.
- Morning Radiance Revitalizing Night Cream: lavender and chamomile oils make your nightly skincare a calming ritual.
- Natural Muscle & Joint Balm: castor oil, ginger and turmeric in an easy-to-use stick for minor aches and stiffness.
Explore the full Calm, Soothe & Sleep collection.
FAQs: Does Aromatherapy Work?
Is aromatherapy scientifically proven?
Research shows moderate evidence that aromatherapy can reduce stress and anxiety and improve sleep quality, especially with lavender. It works best as a complement to other care.
What is the best essential oil for anxiety?
Lavender has the most research supporting its use for anxiety, including several systematic reviews and meta-analyses.
Does aromatherapy help you sleep?
Meta-analyses show aromatherapy can improve sleep quality in adults and older adults.
References
- National Center for Complementary and Integrative Health (NIH). Aromatherapy.
- Freeman M, et al. Aromatherapy and Essential Oils: A Map of the Evidence. Department of Veterans Affairs. 2019.
- Effects of lavender on anxiety: A systematic review and meta-analysis. *Phytomedicine.* 2019.
- Anxiety-Reducing Effects of Lavender Essential Oil Inhalation: A Systematic Review. *Healthcare.* 2023.
- The effectiveness of aromatherapy on preoperative anxiety in adults: A systematic review and meta-analysis. *Int J Nurs Stud.* 2020.
- Effect of aromatherapy on sleep quality of adults and elderly people: A systematic literature review and meta-analysis. *Complement Ther Med.* 2021.
- Effects of aromatherapy on sleep quality in older adults: A meta-analysis. *Medicine.* 2024.