How Aromatherapy Affects Your Mood | Science-Backed Benefits of Essential Oils

The Science Behind Aromatherapy

When we inhale essential oils, the aromas travel directly to the brain via the olfactory nerve. This connection triggers the limbic system, which regulates emotions, memories, and the nervous system.

The process starts in the olfactory bulb, located in the nose, which sends signals to the amygdala and hippocampus—parts of the brain responsible for emotions, behaviour, and memory. This is why scents can evoke vivid memories or strong emotional reactions. Research shows that smell-linked memories are often more intense than those triggered by other senses.

Scents can impact:

• Mood and emotions

• Stress and anxiety levels

• Sleep quality

• Focus and concentration

• Memory and learning

• Even romantic attraction and dream patterns

For example, studies suggest that floral scents before bedtime can encourage positive dreams compared to unpleasant or no scents.

Benefits of Aromatherapy for Mental Wellbeing

Aromatherapy is more than just a pleasant smell—it can support emotional balance and overall wellbeing. Some key benefits include:

1. Improving Mood – Uplift and energize your emotional state

2. Elevating Happiness – Promote feelings of joy and positivity

3. Relieving Stress – Calm the nervous system and reduce tension

4. Increasing Focus & Alertness – Enhance concentration and mental clarity

5. Soothing Irritation – Support emotional regulation and relaxation

Everyone’s sense of smell is unique, so finding the scents that personally resonate with you is key to creating a mood-boosting ritual.

Choosing the Right Essential Oil for Your Mood

Here’s a guide to aromas and their effects:

Lavender

• Calming and relaxing

• Reduces stress, anxiety, and mild depression

• Supports restful sleep

Citrus (Lemon, Orange)

• Brightens mood and energy

• Increases focus and mental clarity

• Creates a fresh, uplifting atmosphere

Wood Scents (Frankincense)

• Promotes relaxation and calm

• Soothes irritation

• Supports meditation and mindful environments

Floral (Geranium)

• Supports sleep and positive dreams

• Balances female hormones

• Sweet, fresh, and calming

Eucalyptus

• Opens the airways and supports respiratory health

• Refreshing and energising

• Helps clear the mind and improve focus

Peppermint

• Invigorating and cooling

• Increases alertness and mental clarity

• Can relieve headaches and tension

Tea Tree

• Purifying and cleansing

• Supports immune function

• Can promote a sense of clarity and freshness

Blending these oils can amplify their effects. For instance, B Calm’s breathe, live and rest calm combine oils to support relaxation, focus, immunity, and emotional balance—making it easy to create your own mood-enhancing ritual.

How to Use Aromatherapy Daily

• Diffusers: Spread the aroma throughout a room to create a calm environment

• Roller balls: Apply blends to pulse points for on-the-go emotional support

• Mindful breathing: Take 3–5 slow breaths while inhaling your chosen aroma to signal calm to your nervous system

Even a few minutes of scent-focused practice can have lasting effects on your mood and wellbeing.

References

1. Herz, R. S. (2009). Aromatherapy facts and fictions: a scientific analysis of olfactory effects on mood, physiology, and behaviour. International Journal of Neuroscience, 119(2), 263–290. https://doi.org/10.1080/00207450802333953

2. Moss, M., Cook, J., Wesnes, K., & Duckett, P. (2003). Aromas of rosemary and lavender essential oils differentially affect cognition and mood in healthy adults. International Journal of Neuroscience, 113(1), 15–38. https://doi.org/10.1080/00207450390161903

3. Lehrner, J., Marwinski, G., Lehr, S., Johren, P., & Deecke, L. (2005). Ambient odors of orange and lavender reduce anxiety and improve mood in a dental office. Physiology & Behavior, 86(1-2), 92–95. https://doi.org/10.1016/j.physbeh.2005.06.025

4. Field, T. (2016). Aromatherapy research: A review. Complementary Therapies in Clinical Practice, 24, 19–23. https://doi.org/10.1016/j.ctcp.2016.01.002