Electric ultrasonic diffusers are one of the easiest and most effective ways to enjoy pure essential oils at home. But with hundreds of oils to choose from, knowing where to start can feel overwhelming. This guide walks you through everything a beginner needs to know to get started with confidence.
How does an essential oil diffuser work?
An ultrasonic diffuser uses high-frequency vibrations to break water and essential oils into a fine micro-mist that is dispersed into the air. Unlike candles or wax melts, diffusers release the essential oils without heat, which means the therapeutic properties of the oils are preserved intact. This makes diffusing one of the most effective ways to benefit from aromatherapy.
How much essential oil to use in a diffuser
As a general rule, use 5 to 8 drops per 100ml of water in your diffuser. Most standard diffusers hold between 100ml and 300ml of water, so you would typically use between 5 and 20 drops depending on the size. Start with fewer drops and increase if you want a stronger scent. Remember that essential oils are highly concentrated - more is not always better.
The best essential oils for diffusers
For relaxation and sleep
Our Wellbeing Sleep blend of lavender, bergamot and vetiver is our most popular diffuser oil. Diffuse it 30 to 45 minutes before bed for a deeply calming effect. The Room Spray Sleep is also an excellent alcohol-free alternative if you prefer a quick spritz.
For energy and focus
Citrus oils are the best mood lifters. Our Wellbeing Uplifting blend combines grapefruit, bergamot, lime, lemon and sweet orange for an instant energy boost. Perfect for mornings or a mid-afternoon slump. For sharper mental focus, try our Wellbeing Vision blend with rosemary, tea tree, lemongrass and clary sage.
For a spa atmosphere at home
Our Day at the Spa and Spa Tranquility blends are specifically designed to recreate the atmosphere of a luxury spa. Add 6 to 8 drops to your diffuser before a bath or yoga session for an instant transformation.
For a cosy home atmosphere
Warm, woody and grounding oils work beautifully in living rooms and bedrooms. Try our Forest blend for a fresh, natural feel, or Amber Woods for something deeper and more sophisticated.
Tips for getting the best results from your diffuser
- Clean your diffuser every 2 to 3 uses to prevent oil residue build-up and ensure the scent stays pure.
- Run your diffuser for 30 to 60 minutes at a time rather than continuously - your olfactory system adapts quickly to scents, so intervals give you a fresher experience.
- Keep diffusers in well-ventilated rooms, especially if you have pets. Cats are particularly sensitive to certain essential oils including tea tree and citrus.
- Use the correct dilution - most diffusers work best with 5 to 8 drops per 100ml of clean water.
Shop our diffuser oils
All our essential oil blends are suitable for electric diffusers and come with diffuser usage rates on each product page. Available in 10ml through to 500ml.