← Back
🌿 Wellbeing

The Best Essential Oils for Your Diffuser

Updated September 2026 · 5 min read

How to properly use essential oil in a diffuser

Unlike traditional oil burners, an ultrasonic diffuser doesn't heat the essential oil — it disperses it into the air as micro-droplets carried by water mist. This cold diffusion better preserves the aromatic properties of the oils, without altering them with heat.

In practice, simply add 3 to 6 drops of essential oil directly to the water tank before switching the device on. Never use pure oil without water.

The best oils depending on the effect you want

To unwind in the evening: lavender

True lavender essential oil is by far the most popular choice for diffusion. Known for its calming properties, it promotes relaxation and helps you naturally settle into sleep.

To breathe easier: eucalyptus

Eucalyptus is popular in winter for its refreshing effect on the airways, as part of a general wellbeing routine.

For energy and focus: lemon

Citrus essential oils like lemon or bergamot are associated with an uplifting, energising effect and a more stimulating atmosphere — ideal for a home office or reading nook.

For a cosy vibe: cedarwood or vanilla

These woody, gourmand scents pair beautifully with the visual effect of a flame diffuser, reinforcing the warm, enveloping mood sought in the evening.

💡 Tip: avoid mixing more than 2-3 different essential oils at once — the scents can cancel each other out or become unpleasant rather than complementary.

Precautions

Frequently asked questions

How many drops of essential oil per use?

Generally 3 to 6 drops for a 180ml tank, adjusted to the desired scent strength and room size.

Can I use organic essential oils in the diffuser?

Yes, any 100% pure, natural essential oil is suitable for ultrasonic diffusion, whether or not it's certified organic.

Should I clean the diffuser after every essential oil session?

A quick rinse of the tank after each session extends the device's lifespan and prevents oily residue building up on the ultrasonic plate.

🔥 Try your favourite essential oil

2-in-1 diffuser — 27,99 € — Free UK delivery

Order now →