Aromatherapy: Can essential oils really help with stress, sleep and headaches?

Essential oils are finding a place in home wellness routines, from lavender scents used before bedtime to peppermint oil products marketed for headaches. But can these plant extracts genuinely improve well-being, or are their benefits largely linked to the experience of a pleasant fragrance? Aromatherapy, which uses concentrated oils extracted from plants, flowers, herbs and trees, has attracted interest as a complementary approach to wellness. It is commonly practised through inhalation or by applying appropriately diluted oils to the skin.

Can aromatherapy help reduce stress?

The sense of smell is closely connected to areas of the brain involved in emotion and memory. “This is one reason a familiar fragrance can evoke a memory or influence how a person feels in a particular setting. Aromatherapy uses this connection as part of its approach to relaxation. Lavender, rose and citrus oils are among the fragrances studied for their possible effects on stress and anxiety,” Uday Arora, co-founder of Puraroma, a natural aromatherapy brand founded in India, said.


A 2023 systematic review published in Complementary Therapies in Clinical Practice examined 76 randomised controlled trials and other clinical studies involving 6,539 patients. More than 70% of the studies reported a positive effect on anxiety levels following inhalation aromatherapy. However, the researchers also noted differences in study methods, oil dosages and the quality of safety reporting.

This means aromatherapy may offer some people a useful relaxation aid, but the findings do not establish that every essential oil reduces stress or that the effects are the same for everyone. “The setting also matters. Using a familiar fragrance during a quiet break may help someone establish a relaxing routine. It should not, however, be treated as a substitute for professional care when anxiety or stress begins to affect daily life,” Uday from Puraroma also added.

Essential oils for sleep: Does science support their use?

Sleep is another area where aromatherapy has received attention. Lavender is among the most frequently studied essential oils for relaxation and sleep-related concerns. A 2021 systematic review and meta-analysis published in Complementary Therapies in Medicine examined 16 studies involving 1,346 participants. It reported improvements in sleep quality among people who used aromatherapy. The researchers nevertheless called for larger and more rigorous studies to establish the findings more firmly.

The US National Center for Complementary and Integrative Health (NCCIH), part of the National Institutes of Health, also notes that research into aromatherapy for insomnia remains limited.

“For consumers, the distinction between improving sleep quality and treating insomnia is important. A pleasant fragrance may help make a bedtime routine more relaxing, but that does not mean it can address every cause of sleeplessness. Persistent sleep problems can be associated with stress, medication use, underlying health conditions or sleep disorders. People experiencing ongoing difficulties should seek medical advice rather than relying solely on essential oils,” Uday Arora, co-founder of Puraroma and scientific aromatherapy expert, said.

Can essential oils help with headaches?

Headaches are a more complicated area because their causes and symptoms vary. Tension headaches, migraines and headaches associated with dehydration or other medical conditions may require different approaches.

Peppermint oil is often discussed in relation to headache relief. Some limited research suggests that particular peppermint oil preparations applied to the skin may help relieve tension headaches. However, evidence supporting aromatherapy for headaches more broadly remains insufficient to draw firm conclusions.

The method of application is particularly important. Evidence concerning a topical preparation cannot automatically be applied to inhaling the same oil or using it in a diffuser.

Essential oils should also not delay medical assessment when headaches are severe, recurrent or unusual. A sudden, extremely severe headache or a headache accompanied by symptoms such as weakness, confusion or difficulty speaking requires urgent medical attention.

Essential oil safety: What should consumers know?

The word “natural” does not automatically mean harmless. Essential oils are concentrated extracts, and inappropriate use can cause problems even when the ingredients originate from plants. Consumers should keep the following precautions in mind:

Do not apply concentrated oils directly to the skin: Follow product-specific dilution instructions and check for warnings about irritation or allergic reactions.

Use diffusers carefully: Follow the manufacturer's instructions and stop use if a fragrance triggers coughing, breathing discomfort or a headache.

Do not assume oils are safe to swallow: Ingesting essential oils can pose risks. Oral use should not be attempted unless specifically advised by a qualified healthcare professional familiar with the product.

Take extra care during pregnancy and around children: Safety varies by oil, concentration and method of use. Seek appropriate medical advice before using these products in such circumstances.

Check for possible interactions: People taking medicines or managing existing health conditions should consult a healthcare professional before using essential oil products for therapeutic purposes.

Skin irritation and allergic reactions are recognised risks. Certain citrus oils can also increase sensitivity to sunlight when applied to the skin, depending on the oil and formulation. Anyone who experiences an adverse reaction should discontinue use and seek medical advice when necessary.

Can aromatherapy be part of a wellness routine?

Aromatherapy may have a place in a broader approach to well-being, particularly when the aim is to create a relaxing environment or complement an established bedtime routine. Some research points to possible benefits for stress and sleep quality, while the evidence for headache relief is more limited.

The important consideration is to match expectations to the available evidence. A fragrance that helps one person relax may have little effect on another, and a product's chemical composition does not by itself establish its medical benefits.

As interest in natural wellness products grows, consumers need more than attractive packaging and broad health claims. Transparent labelling, appropriate safety guidance and credible research can help them make better-informed choices.

Essential oils may offer a useful addition to some people's wellness routines. They should remain a complement to, rather than a replacement for, appropriate medical care.