Benefits of Eucalyptus oil in a Diffuser.

Many people have heard of the many benefits of eucalyptus, but what about the benefits of eucalyptus oil in a diffuser?

We all love the spa-like ambiance of running a diffuser with some fabulous smelling essential oils but let’s head straight into some of the main reasons you should use eucalyptus oil in your diffuser blends.

Eucalyptus benefits in a diffuser include loosening mucus and reducing coughing, relief of anger, anxiety, and agitation. Its disinfectant, antimicrobial and antiseptic properties stop germs from spreading. its botanical aroma freshens rooms, aids focus, reduces pain, and supports hair health. 

Eucalyptus oil benefits in a diffuser 

Eucalyptus has been widely used in aromatherapy and has been diffused for almost 6000 years!  Its botanical, balsamic aroma means it’s an amazing oil to soothe symptoms of coughs and colds. 

It’s not surprising to discover that a study published in Clinical Microbiology & Infection reports that eucalyptus oil in a diffuser or steam inhaled may have antibacterial effects on bacteria in the upper respiratory tract. 

It can help to ease and reduce: 

  • Haemophilus influenzae, a bacteria responsible for a range of infections 
  • some strains of streptococcus

Eucalyptus benefits in a diffuser are bountiful! 

Let’s look at some more benefits briefly and I’ll expand on some of the main points later on in the article. 

Benefits of eucalyptus oil in a diffuser with blend recipes 

I’ve also added a diffuser blend next to each benefit, so you can easily find out which oils work best and add to your aromatherapy kit! 

Drops of oil are based on 100mL of distilled water or boiled and cooled water from a kettle. Simply I double the drops for a 200mL diffuser.  

  • Treats insomnia: 3 drops of eucalyptus, and 3 drops of lavender
  • Stress problems: 2 drops eucalyptus, 2 drops clary sage, 2 drops marjoram 
  • Breathing difficulties: 3 drops eucalyptus and 3 drops peppermint oil 
  • Chest infections: 3 drops eucalyptus, 3 drops lemon 
  • Supports the immune system: blend 2 drops eucalyptus with 2 drops orange, and 2 drops tea tree 
  • Helps with pain relief: 3 drops eucalyptus, 3 drops clary sage 
  • Supports hair growth: 2 drops eucalyptus, 2 of coconut oil 
  • Helps with presurgical anxiety: 2 drops eucalyptus, 2 drops lavender and 2 drops chamomile 
  • Can relieve symptoms of sinusitis, asthma and bronchitis: 2 drops eucalyptus 2 drops peppermint and 2 drops  tea tree 
  • Reduces headaches from congestion: 2 drops eucalyptus, 2 drops clary sage and 2 of rosemary 
  • Helps repel bugs in your home and houseplants: 1 drop eucalyptus, 1 drop of thyme, 1 drop clove and 1 drop lemongrass ( citronella)
  • Air freshener: 2 drops of eucalyptus blends beautifully with 2 drops cedarwood, 1 drop black spruce and 1 drop nutmeg
  • Disinfectant: 2 drops eucalyptus, 2 drops of oregano and 2 of rosemary for a ‘cleaning day’ aroma! 

For more amazing immune-boosting diffuser blends, head over to my other helpful article to find some clearing, decongestant, and comforting blends for fall and winter. 

eucalyptus oil for diffusers
eucalyptus oil for diffusers

combine the benefits by diffusing and applying topically.

To double up on those eucalyptus diffuser benefits, it can also be used topically to: 

Ok so now I’ve got you started with this beneficial oil, let’s look into eucalyptus benefits in a diffuser in a little more detail. 

“Stress problems – Eucalyptus blends beautifully in a diffuser with clary sage and marjoram”


Eucalyptus oil combined with peppermint is dispersed in the air by diffusers and can also be breathed in during a steam bath, over a bowl or reflex therapy. 

One of the chief benefits of eucalyptus oil in a diffuser is that it stimulates the olfactory system. Its clearing, mountain air, and balsamic aroma also give an instant lift to your mood. 

Eucalyptus essentially disinfects the respiratory tract because of its antimicrobial properties. When it’s in a diffuser, it helps to relieve the stress caused by nasal congestion, and chest tightness.

“One of the chief benefits of eucalyptus oil in a diffuser is that it stimulates the olfactory system.” 

Eucalyptus oil in a diffuser passes into the limbic system 

The Eucalyptus oil droplets inhaled through diffusers pass from nose to brain and then into the limbic system. 

The limbic system in humans is responsible for emotions, responses, and moods, etc. 

When you add eucalyptus oil in diffuser blends, it affects emotional responses and moods along with its healing benefits to provide an overall holistic effect to the body.

Eucalyptus oil, when combined with steam, is also very effective in giving relief to patients with diseases like Asthma, Sinusitis, and Bronchitis.

Anxiety and agitation

Another of the main benefits of Eucalyptus oil in a diffuser is that it can help to remove negative thoughts and feelings of anxiety. 

In clinical trials 1,8-Cineole, a major constituent of eucalyptus was found to be effective in reducing anxious feelings. 

In another study, 62 healthy people experienced less anxiety before surgery after inhaling eucalyptus oil due to the presence of eucalyptol. 

Eucalyptol makes up around 90% of Eucalyptus essential oil. 

Hair growth

One of the little-known benefits of eucalyptus in a diffuser is that it supports hair health! 

The active compounds in the eucalyptus oil circulate in the blood. when its inhaled through a diffuser or steam inhalation. 

This has the effect of stimulating the hair follicles and improving hair growth. It also helps to guard against an itchy scalp and dandruff.

Research has revealed that eucalyptus oil has natural nourishing anti-inflammatory properties. 

This means as it is inhaled in a diffuser or applied to the skin after dilution, it promotes hair growth by reducing scalp inflammation. 

Another way to diffuser the power of eucalyptus oil is in a lava bead bracelet. Find out why you need a lava bead bracelet, in my other helpful article.

“One of the little benefits of eucalyptus in a diffuser is that it supports hair health!”

eucalyptus oil for hair

Pain relief 

Eucalyptus oil, as we’ve discovered,  is best known for its anti-inflammatory and anti-microbial properties. 

So it’s unsurprising to find out another of the great benefits of eucalyptus oil in a diffuser is that it can help with symptoms of arthritis and other types of pain. 

It’s thought to help quell not only the inflammation but also the invasion of bacteria. The Cineole and Limonene in eucalyptus are natural pain relievers and also help to relax muscles.

A 3-day study in 52 people who had undergone knee replacement surgery found that inhaling eucalyptus oil dissolved in almonds daily for 30 minutes decreased pain and blood pressure levels

“Another great benefit of eucalyptus oil in a diffuser is it can help with symptoms of arthritis.”

Disinfectant and air freshener 

Probably one of the most well-known uses of Eucalyptus is its ability to purify the air. 

Feel the benefits of eucalyptus oil in a diffuser as its botanical aroma fills your room with the smell of mountain air! 

The well-studied antimicrobial effects of Eucalyptus oil bring a wealth of benefits in a diffuser. It does this by supporting a clean environment that helps stop the spread of germs and viruses.

“Feel the benefits of eucalyptus oil in a diffuser as its botanical aroma fills your room with the smell of mountain air!”

Clears mucus and dries up coughs 

Another of Eucalyptus’ amazing benefits in a diffuser is clearing mucus. 

It does this by reacting with mucosal membranes and the internal lining of the cells. As it loosens the mucus in the lungs, it dilutes it, and helps to relieve dry coughs and chest infections. 

Combine a eucalyptus diffuser blend with a topical rub ( 5 drops of eucalyptus, 1 tablespoon of apricot oil or jojoba) for maximum benefits.

eucalyptus and other oils for diffuser

Bug repellent 

When eucalyptus oil is blended with some other well-known essential oils, it’s a very effective bug repellent. 

Some essential oils are toxic to bugs, which is down to some of the active compounds in oils such as thymol, (thyme) citronellic acid (lemongrass), and eugenol (clove). 

One of the reasons it works to blast bugs is through eucalyptus’ powerful compounds.


Headaches caused by sinus issues or nasal congestion can be treated using eucalyptus oils in a diffuser. 

The way eucalyptus oil helps is by inducing a relaxing effect.It also acts as a bactericidal or bacteriostatic agent. This means it stops bacteria from reproducing. 

This is down to its anti-bacterial and anti-inflammatory properties. 

These properties help to unblock nasal passages and help relieve sinus stresses that can cause headaches.

Ok,whe now we’ve got the huge number of benefits eucalyptus benefits in a diffuser covered. let’s take a look now at how it works. 

How do you get the benefits of eucalyptus oil in a diffuser? 

Diffusers or aroma lamps project essential oils such as eucalyptus into the air by natural evaporation using ultrasonics. 

So an ultrasonic wave Is essentially a vibration that works through air, water, or metal. The ultrasonic waves can’t be seen by the human eye, or heard so you aren’t likely to see or hear your eucalyptus moving through the air! It would be amazing if it could, wouldn’t it? 

It’s through these supersonic waves and compressed air that you will be able to experience the full benefits of eucalyptus oil in a diffuser.  Who knew? 

And Finally…

So there it is! all the benefits of eucalyptus oil in a diffuser you need to get started on your DIY aromatherapy blends. Whether you use Eucalyptus to diffuse in an electronic or the more traditional ceramic style burner, its wealth of benefits mean it will become one of your go-to oils. Its right at the top of my list to make some beautiful blends.

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