Do you remember the first essential oil you ever diffused? For me, like many others, it was lavender. The calming, soothing aroma filled the room, and I instantly felt relaxed and at peace. In today’s fast-paced world, more people are turning to aromatherapy to support sleep, manage stress, and enhance self-care routines. Essential oil diffusers are now a common alternative to candles, but questions remain: Are they safe? Do they emit VOCs? Can they be used around children and pets? How many drops should you add? And what’s the difference between different types of diffusers? Let's dive into these common questions and more!

The Top 10 FAQs About Diffusing Essential Oils

1. What are the benefits of diffusing essential oils? Diffusing essential oils offers both physical and emotional benefits. It purifies the air, creating a fresher space while also promoting relaxation or focus, depending on the oils you choose. Lavender and chamomile help with sleep and relaxation, while peppermint and citrus oils can increase focus and elevate mood. Additionally, essential oils can support respiratory health by helping to clear airways and providing relief from congestion.

2. What’s the difference between ultrasonic and nebulizer diffusers?

• • Ultrasonic Diffusers: These are great for home use, requiring only a small amount of water and essential oils. They work by using ultrasonic vibrations to release the oil into the air as a fine mist.
  • Nebuliser Diffusers: These diffusers use larger amounts of oil but for shorter periods. No water or heat is involved; instead, an air pump atomises the oil into tiny droplets that are dispersed into the air.

3. How many drops of essential oil should I add to the diffuser? This varies depending on the type and size of your diffuser, particularly the water reservoir in ultrasonic diffusers. Refer to the manufacturer’s guidelines or use a standard recommendation as a reference.

4. Why can’t I smell my essential oils after a while? If your diffuser is clean and you have no issues with your sense of smell, you may be experiencing sensory adaptation. Your brain adjusts to constant scents and stops recognising them, allowing you to perceive new aromas. If you leave the room and return, you’ll likely notice the scent again.

5. Is diffusing essential oils safe? Do they release VOCs? While studies on essential oils are still ongoing, diffusing in moderation is generally considered safe. Essential oils do emit volatile organic compounds (VOCs), but unlike synthetic VOCs found in products like paint or cleaners, the VOCs in essential oils are naturally occurring. When using high-quality, pure oils and ensuring proper ventilation, they are considered safer. However, it's important to diffuse in moderation and in well-ventilated spaces.

6. Can diffusing essential oils cause headaches? Yes, diffusing certain essential oils can trigger headaches, especially if used in high concentrations or for prolonged periods in poorly ventilated areas. Strong oils like peppermint or eucalyptus, or floral oils like ylang ylang, can sometimes cause headaches. If you experience discomfort, turn off the diffuser, open windows for fresh air, and drink water. It’s important to use high-quality, pure essential oils, as synthetic fragrances are more likely to cause headaches.

7. Does the brand of essential oil matter? Yes, not all essential oils are created equal. Since the industry is largely unregulated, it’s important to choose oils from reputable brands. Look for 100% pure essential oils with transparent labeling, including the botanical name and any added ingredients.

8. How often should I clean my diffuser? To maintain your diffuser’s efficiency, clean it weekly. You may need to clean it more often if you use thicker oils like vetiver or patchouli. Follow your diffuser’s cleaning instructions for the best results.

9. Can I diffuse around children? While diffusing is generally safe, essential oils are highly concentrated. Always follow diffuser guidelines for water and oil quantities and diffuse in large, well-ventilated rooms. Avoid placing infants directly near diffusers, and keep both oils and diffusers out of reach of young children.

Oils to avoid around small children include:

Anise

Birch

Clove Bud

Eucalyptus

Peppermint

Wintergreen, among others.

10. Can I diffuse around pets? Pets, particularly dogs and cats, have a more sensitive sense of smell than humans. When diffusing, ensure the room is well-ventilated and allow your pets to leave the space if they dislike the scent. Cats, in particular, have trouble metabolising certain oils due to their unique biology. Oils like tea tree, thyme, and cinnamon bark should be avoided, or only used under the guidance of a certified aromatherapist or veterinarian.

Blending Essential Oils

New to blending essential oils? It’s a creative way to enhance their therapeutic effects. When you blend oils, their properties can complement each other, offering a more balanced result. For instance, combining lavender and chamomile with cedarwood can amplify relaxation, while peppermint and citrus can help boost energy and focus.