Knowledge bank on essential oils, diffusers & aromatherapy

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Jan. 02, 2025

How to clean a diffuser?

How to thoroughly clean your aroma diffuser - step by step

An aroma diffuser or scent diffuser is a great investment to create a lovely and relaxing atmosphere in your home. But to ensure that your diffuser works optimally and doesn't negatively affect the scent, it's important to clean it regularly. Here's a complete guide on how to deep clean your diffuser, while also sharing some bonus tips to extend the life of your Evoroma diffuser.

Why is it important to clean your diffuser regularly?

When you use your diffuser frequently, oil and water residues accumulate in the tank. If these are not cleaned away, it can lead to:

  • Deterioration in performance.
  • Unwanted scent combinations from old oil residues.

    Keeping your aroma diffuser clean also contributes to a better scent experience and longer life of the device.

Materials you need for the cleaning

  • Lukewarm water.
  • A few drops of ordinary hand dishwashing detergent.
  • 12 % vinegar.
  • Paper towels, a sponge or a soft cloth.
  • Cotton buds/tops (to reach difficult surfaces).

Step-by-step guide to deep cleaning your diffuser

1. turn off and unplug the power cord

Before you start cleaning your diffuser, make sure it is switched off and disconnected from the power source.

2. empty the tank

Drain any remaining water and oil into the sink. 

3. rinse with lukewarm water and detergent

Fill the tank with a little lukewarm water and add a few drops of hand dishwashing liquid. Use a soft cloth, sponge or paper towel to wipe the inside of the tank.

NOTE: Be careful not to get any liquid into the fan tube, which is the square tube that runs along the inside of the tank.

4. rinse clean with water

Drain the detergent mixture and rinse the tank thoroughly with clean water. Make sure that no detergent residues remain.

5. use vinegar for deep cleaning

Pour some 12% vinegar into the tank and use the same method as before: wipe the inside of the tank with a cloth, sponge or paper towel.
Vinegar is effective for dissolving any oil residues and for disinfecting.

6. Finish with a thorough rinse

Drain any excess vinegar into the sink and rinse the tank one last time with clean water. Wipe the inside with a clean, dry cloth.

7. clean the ultrasound plate

The small ceramic ultrasonic plate at the bottom of the tank can be difficult to access. Use a cotton swab with a little vinegar to clean it. Finish by rinsing the tank thoroughly.

Frequently asked questions about cleaning aroma diffusers

How often should I clean my diffuser?

For daily use, it is recommended to do a quick cleaning (just rinse with water) after each use. A deep clean as described above should be done about once a month or every two months depending on how often you use it.

Can I use something other than vinegar?

Can I clean the diffuser in the dishwasher?

No, aroma diffusers are not dishwasher safe. Cleaning should always be done by hand to avoid damage to electronics and sensitive components.

Bonus tips to keep your diffuser in top condition

  • Always use Evoroma's high-quality fragrance oils: cheaper oils may leave more residue and be harder to clean off.
  • Avoid overfilling the tank: always follow the recommended water level to avoid spills and damage.
  • Store the diffuser dry when not in use: If you know you won't be using it for a while, empty and dry the tank thoroughly before storing.

Executive summary

Keeping your aroma diffuser clean is essential to maintain its functionality and to ensure a fresh fragrance experience every time you use it. With these simple steps, you can easily take care of your diffuser and enjoy its benefits for a long time.

Do you have questions about how to clean your diffuser or looking for inspiration for fragrances? Get in touch with us at Evoroma - we're happy to help!

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Sep. 20, 2023

Guide: Choose the Right Essential Oils for Your Needs

Guide: Choose the Right Essential Oils for Your Needs

Have you ever stood in front of a shelf full of small brown bottles and felt completely lost? Lavender, orange, peppermint, eucalyptus... the list is endless! Choosing the right essential oil can feel like a jungle, but I promise, it doesn't have to be that complicated. This guide is your compass in the world of fragrances, and together we'll figure out how to find the oils that suit your needs.

First of all, what exactly are essential oils? Imagine the essence of a plant, concentrated in liquid form. They are extracted from flowers, leaves, bark, roots and fruits by distillation or cold pressing. This process captures the 'soul' of the plant, its scent and its potential therapeutic properties. And yes, it is about potential properties. While essential oils have been used for millennia for everything from relaxation to relief from various ailments, it's important to remember that research is still ongoing, and results may vary from person to person.

Important: Essential oils should never be ingested and should be used with caution on the skin. Essential oils should always be mixed. A great way to enjoy essential oils is to mix them with water and then drip into our aroma diffuser.

Why should you care about essential oils?

Good question! There are several reasons:

The scent: Okay, this one is pretty obvious. Essential oils smell amazing! They can turn your home into an oasis of calm, an invigorating energy center, or a romantic retreat - all depending on the scent you choose.

Mood enhancers: Scents have a direct connection to our limbic system, the part of the brain that controls emotions and memories. Some scents can trigger relaxation, others can provide an energy boost, and some can even bring back fond memories.

Potential wellbeing benefits: Many people use essential oils to relieve stress, improve sleep, relieve headaches, strengthen the immune system or even improve skin condition. (More on this later!)

Natural alternative. In a world filled with synthetic fragrances and chemicals, essential oils offer a return to nature. (But remember that 'natural' does not always equal 'harmless' - more on safety below).

Before we dive into the world of oils - a little reminder about Evoroma

We at Evoroma love cozy evenings at home. Before we created our product, we thought: how to make the cozy evening as good as possible?

That's when we realized it! Scent can affect the mood of the home so much. That's why we created a stylish stoneware diffuser that spreads scent in the right way in your home!

It's so easy to use. Fill the tank with water, choose your favorite scent, sit back and enjoy.

Diffusing the scent of essential oils with a diffuser is a great way to create a lovely atmosphere. It's a gentle way to let the scent fill the room, without being too overwhelming. And isn't there something special about watching the fine mist rise and spread?

Now for the fun part: which oils should you choose?

Let's break it down by need. Here are some common requests and the oils that are often recommended:

1. relaxation and reduced stress:

Lavender (Lavandula angustifolia): the queen of relaxation! Lavender is known for its calming and soothing properties. It is perfect for unwinding after a stressful day, or for creating a calm atmosphere before bedtime. Many people find that lavender helps reduce anxiety and improve sleep quality.

Bergamot (Citrus bergamia): A citrus scent with a twist! Bergamot is uplifting and calming at the same time. It can help to lighten the mind and reduce feelings of depression. Imagine a sunny day in Italy - that's pretty much the feeling bergamot can give.

Ylang Ylang (Cananga odorata): An exotic and floral scent often used to reduce stress and promote relaxation. Ylang Ylang can also have an aphrodisiac effect, so it's perfect for a romantic evening.

Chamomile (Matricaria recutita or Chamaemelum nobile): Both Roman and German chamomile are known for their calming properties. They can help relieve tension and promote a sense of calm. Chamomile is also gentle and often suitable for children.

Frankincense (Boswellia carterii): A deeply grounding and meditative scent. Frankincense is often used to promote inner peace, reduce stress and improve focus. It has a long history of use in religious and spiritual ceremonies.

2. Energy and Focus:

Peppermint (Mentha piperita): A real energy boost! Peppermint is refreshing and stimulating. It can help increase concentration, sharpen the mind and relieve fatigue. Perfect for a day of studying or work.

Rosemary (Rosmarinus officinalis): An herbal scent known to improve memory and concentration. Rosemary can also help relieve headaches and fatigue.

Lemon (Citrus limon): A classic refreshing scent! Lemon is known to elevate mood, boost energy and improve focus. It is also a good air purifier.

Eucalyptus (Eucalyptus globulus or radiata): A fresh and clear scent often used to clear the airways. Eucalyptus can also help boost energy and improve concentration.

Grapefruit (Citrus paradisi): An uplifting and energizing citrus scent. Grapefruit can help reduce fatigue, increase motivation and improve mood.

3. sleep and rest:

Lavender (Lavandula angustifolia): (Yes, it's back!) Lavender is a star when it comes to sleep. Its calming scent can help reduce restlessness, promote relaxation and improve sleep quality.

Cedarwood (Cedrus atlantica): A warm and woody scent known for its calming and grounding properties. Cedarwood can help create a sense of security and promote deep and restful sleep.

Vetiver (Vetiveria zizanioides): A deep, earthy and smoky scent known for its calming and relaxing properties. Vetiver can help reduce stress, relieve anxiety and promote a good night's sleep.


Orange (Citrus sinensis): A sweet and soothing scent that can help reduce anxiety and promote relaxation. Orange is mild and often suitable for children.

4. colds and immune system:

Eucalyptus (Eucalyptus globulus or radiata): As mentioned earlier, eucalyptus is excellent for clearing the airways. It can help relieve nasal congestion and coughs.

Tea Tree (Melaleuca alternifolia): A powerful oil with antibacterial, antiviral and antifungal properties. Tea Tree can be used to strengthen the immune system and fight infections.

Important: Essential oils should never be ingested and should be used with caution on the skin. Essential oils should always be mixed.

Lemon (Citrus limon): Lemon is not only refreshing, it also has antibacterial and antiviral properties.

Thyme (Thymus vulgaris): A strong oil with powerful antibacterial and antiviral properties. Thyme can be used to strengthen the immune system and fight infections. 


Ginger (Zingiber officinale): A warm and spicy oil that can help relieve nausea and strengthen the immune system.

5. Skin care:

Tea Tree (Melaleuca alternifolia): (Yes, it's back!) Tea Tree is known for its antibacterial and anti-inflammatory properties, making it popular for treating acne and other skin problems. Important: Always dilute Tea Tree thoroughly before applying to the skin.

Lavender (Lavandula angustifolia): Lavender is soothing and healing to the skin. It can be used to relieve irritation, reduce redness and promote healing of minor wounds and burns.

Geranium (Pelargonium graveolens): A floral fragrance known for its balancing properties for the skin. Geranium can help regulate sebum production, reduce inflammation and improve skin elasticity.

Frankincense (Boswellia carterii): Frankincense is known for its anti-aging properties. It can help reduce wrinkles, improve skin tone and promote cell renewal.

Carrot seed oil (Daucus carota): An oil rich in antioxidants and vitamins. Carrot seed oil can help protect the skin against damage, improve skin tone and reduce signs of ageing.

Important about Safety:

Dilution: Essential oils are very concentrated and should always be diluted in a carrier oil (e.g. almond oil, jojoba oil, coconut oil) before applying to the skin. A common recommendation is 1-3% essential oil in the carrier oil.

We recommend using an aroma diffuser as it is the best way to enjoy essential oils without having to worry too much about safety.

Ingestion: Essential oils should NOT be ingested.

Pregnancy and breastfeeding: Some essential oils should be avoided during pregnancy and breastfeeding. Always consult your doctor or midwife before using essential oils if you are pregnant or breastfeeding.

Children: Take extra care with essential oils around children. Some oils are not suitable for children under a certain age. Always dilute the oils properly and use them with caution.

Allergies: If you have sensitive skin or are allergic to certain plants, you should test a small amount of diluted essential oil on a small area of skin before using it more widely.

Phototoxicity: Some citrus oils (e.g. bergamot, lemon, lime) can make the skin more sensitive to sunlight. Avoid sun exposure for 12-24 hours after applying these oils to the skin.

Storage: Store essential oils in a dark, cool place out of reach of children and pets.

Quality is key:
When buying essential oils, make sure to choose pure, undiluted, high-quality oils. Look for oils that are labeled with the botanical name (e.g. Lavandula angustifolia for lavender), country of origin and extraction method. All our essential oils are sourced in the EU and we follow all safety requirements. We can assist you with all data safety sheets and take all safety requirements very seriously. Unfortunately, there are quite a few operators who do not and therefore it is always best to choose an operator who can provide you with all the required data sheets.

Final words:

Exploring the world of essential oils is a journey of fragrance, well-being and discovery. I hope this guide has given you a good foundation, and that you feel inspired to find the oils that are right for you. And don't forget to check out Evoroma.se to find your perfect diffuser and start creating a fragrant home. Good luck to you!

FAQ/Frequently Asked Questions:

1. "I'm new to essential oils - where do I start?"

 Start with a few basic oils such as lavender (for relaxation), peppermint (for energy) and lemon (for refreshing effect). Experiment with these individually or in simple mixtures in your diffuser. Read up on safe use, especially on dilution, before applying them to the skin.

2. "How do I know if an essential oil is of good quality?"

    Look for 100% pure essential oils. Look for the botanical name (e.g. Lavandula angustifolia for lavender), country of origin and extraction method on the label. Buy from trusted suppliers like Evoroma.se.

3. "Can I use essential oils directly on my skin?"

    No, never. Essential oils are very concentrated and need to be diluted in a carrier oil (e.g. almond oil, jojoba oil) before application to the skin. A common recommendation is 1-3% essential oil in the carrier oil. Some oils, like tea tree, require extra care. The best way to enjoy essential oils is to use a diffuser.

4. I am pregnant/breastfeeding - which essential oils should I avoid?"

    Some essential oils are not recommended during pregnancy or breastfeeding. Always consult your doctor or midwife before using essential oils if you are pregnant or breastfeeding. There are general lists online, but individual advice is most important.

5. "My diffuser doesn't work/smells weird, what am I doing wrong?"

Clean the diffuser regularly according to the manufacturer's instructions. Use clean water and make sure you do not overfill the container. If you use tap water and live in an area with hard water, you may want to use distilled or filtered water to avoid lime deposits. Check that the oil you are using is of high quality and from Evoroma. If the problem persists, contact the retailer or manufacturer.

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Essential oils that are 100% natural. The picture shows lavender essential oil, peppermint essential oil and grapefruit essential oil. Gives a good scent in the home!
Aug. 08, 2022

What are essential oils?

Essential oils are the collective name for concentrated, natural and plant-based aromatic liquids that provide both fragrance and health-promoting properties. 
They smell completely different depending on the plant they are extracted from, and can also have different viscosity and color. 
With essential oils and a diffuser (you can find both at Evoroma!) plus a little ordinary tap water, you can both spread the scent in your home and at the same time help you unwind, refresh or fall asleep more easily! 
Try one of our ready-made fragrance blends:
  • Energy: for energy and focus.
  • Calm down. For relaxation and peace of mind.
  • Sunshine. To lift your spirits when everything feels gray.
  • Go to sleep. To bring calm and make it easier to fall asleep.

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Why should you use essential oils?
Aug. 08, 2022

Why should you use essential oils?

Essential oils are mainly used for two reasons: 
  • For their fragrance
  • For their health-promoting properties
The fragrances in essential oils are volatile, which means that the fragrance molecules disperse easily even at room temperature. They are therefore excellent for creating a lovely scented environment in the home. With a diffuser, the fragrances are mixed with water vapor and spread throughout the room. Essential oils are also completely natural and come from different plants and plant parts. Take Evoroma's lavender oil, for example. It takes about one kilogram of lavender flowers to make 10 ml of essential oil. So when you buy a bottle of Evoroma Lavender, you get the scent of a whole flower bed!
With a diffuser, you can spread this scent throughout your home. Because the essential oils are so concentrated, you only need to add a few drops to your diffuser to make your home smell amazing. In other words, one bottle goes a long way!
As far as health-promoting properties are concerned, they are different for different oils, just like the scents. Aromatic plants and essential oils have been used for hundreds of years to both relieve ailments and alter states of mind. Some have an uplifting effect, others bring calm and tranquillity. Essential oils are made up of natural chemicals that can help people feel better. 'Aromatherapy' is the therapeutic term used to describe the health-promoting properties of different oils. Aromatherapy advocates both inhalation (e.g. using a diffuser) and topical application. Topical use means applying the oil to the skin. As essential oils are highly concentrated, they should not be used on the skin directly from the bottle - they are too strong! Instead, when used topically, they should first be diluted with a so-called carrier oil, such as coconut or jojoba oil. 
On our essential oils category page, you can filter by both the scent types of the oils, but also their properties. 
Combining different oils is entirely possible with a diffuser. You can do this both to create your own magnificent scent images, and to create a mixture with the properties you want for the day. 
At Evoroma, we have developed four pre-blended oils, which both smell fantastic and have different uses:
  • Energy: for energy and focus.
  • Calm down. For relaxation and peace of mind.
  • Sunshine. To lift your spirits when everything feels gray.
  • Go to sleep. To bring calm and make it easier to fall asleep.

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How to use a diffuser?
Aug. 08, 2022

How to use a diffuser?

A diffuser is incredibly easy to handle:
  1. Pour in plain tap water. 
  2. Add a few drops of essential oil. 
  3. Start.
When the water in the diffuser runs out, it switches off automatically.
A diffuser is mainly used to spread fragrance in the home. 
The advantage compared to other fragrance products is that you choose the scents you want, and how strong or weak you want it to smell, before each use. 
Evoroma essential oils are 100% natural. The only thing you diffuse in your home with an Evoroma diffuser and our essential oils is therefore plain water + natural fragrances from the plant kingdom. Compare with, for example, scented candles or air fresheners that often consist of wax substances, chemicals and artificially produced scents.
Some diffusers are powered by USB cable. Evoroma's diffuser plugs directly into the wall socket via the supplied adapter.
Evoroma's diffuser has both a timer and interval function. 
With the timer you can choose to let the diffuser run for 1, 2, or 4 hours. (Of course, it can also run without a timer, and will then turn off when the water in the tank runs out).
With the interval function, the diffuser is active for 30 seconds, stops for 30 seconds, activates again for 30 seconds, etc. With the interval function turned on, you maximize the diffuser operating time per tank.
Evoroma's diffuser also features a warm white LED light that illuminates both a ring around the base, as well as the vapor flowing out of the top. A beautiful and soothing spectacle! The lamp is turned on and off with a simple push of a button.

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White essential oil diffuser that brings a good scent to the home.
Aug. 08, 2022

How does an essential oil diffuser work?

The diffuser has a tank that you fill with ordinary tap water. A few drops of essential oil or perfume oil are then added to the water. A vibrating ceramic plate in the base of the diffuser creates water vapor. The water vapor carries the added fragrance oil into the room, spreading the scent throughout the home.
If you use essential oils with your diffuser, you can benefit from the beneficial properties of the different oils in addition to the lovely scent. For example, lavender and clary sage can have a relaxing and calming effect, while peppermint and grapefruit can cheer you up and lift your spirits!
Curious to try it? Discover our handmade ceramic diffuser that our customers love. You can find our selection of diffusers here.

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White essential oil diffuser for bathrooms.
Aug. 08, 2022

What is a diffuser?

A diffuser (also known as an 'aroma diffuser' or 'fragrance diffuser') is a device that uses cold water vapor to diffuse fragrances in the home. The scent usually comes from essential oils or perfume oils, and is added drop by drop directly into the diffuser's water tank. This allows the user to change both the scent and the strength of the scent at each use. This is in contrast to scented candles, for example, which have a predetermined scent and strength.
There are many different diffusers, with slightly different materials and features. The size of the water tank, steam capacity, timer and interval functions vary greatly between different models.
The result of a thorough analysis, the Evoroma diffuser has an extra-large water tank, a compact format, simple and useful functions and a modern minimalist design. The ceramic stoneware shell is made by hand.
For more on our diffuser: check it out here.

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Aug. 07, 2022

Which essential oil is best?

How we perceive scents is highly personal, and there are so many great ones! But let's try to answer the question by recommending as few oils as we can: 
A floral favorite, and a sweet citrus. These two are incredibly easy to like! 
Lavender is also very much appreciated for its relaxing and calming effect, which gives it another big plus. Grapefruit, on the other hand, can have the ability to refresh and bring a more positive feeling to a tired and depressed mind. 
A hot tip is to grab one of our packages of favorites:
The small package is with just lavender and grapefruit! We've added peppermint too - a really fresh oil!
For the intermediate package, we have added two oils that perhaps not everyone knows about, but that really should be discovered and are easy to like! 
The large package has a good range of both old favorites and new acquaintances. You get a really good basic range that also invites creativity. Different oils can be mixed in the diffuser to create new exciting scent images!
You can discover our full range of 100% natural essential oils by clicking here. 

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Aug. 06, 2022

Which essential oils go well together?

On each oil's product page there is a tab called "Combinations". There, we show a couple of oils that we think individually, in terms of scent, go well with the oil whose page you are visiting. In addition, on many product pages we give tips in the running text on specific blends you can try. 


In addition, we would like to give you a few tips:


Citrus oils generally pair well with each other (such as lemon + lime), but are incredibly versatile and can be combined with most other oils. A very simple category of oils to combine that rarely goes wrong!


Get at least one base note (e.g. cedarwood, patchouli, vetiver, frankincense). They add a whole new weight and complexity to the fragrance blend that you don't really get with the perhaps more familiar oils found among the top and middle notes. An example of a base note that is loved by many is frankincense. It's great with citrus, and also goes well with floral scents like lavender and ylang ylang. 


Rosemary is fresh, herbal and quite complex. It works brilliantly with citrus-scented oils, and we particularly like rosemary + lemongrass. A fresh and pleasant spa feeling is promised!


For those who are not so familiar with essential oils, we have put together three different packages of popular oils. 


The smallest pack (3-pack) contains oils that smell great on their own and are among the most popular. 


The middle pack (5-pack ) has the same three oils as the above, but is complemented by ylang ylang and frankincense. A popular and floral middle note, and a wonderful base note that invites fragrance blending and adds character. 


The large pack (10-pack) has a well-balanced assortment of popular oils. Here you get a really nice set of oils that can be combined in a variety of lovely ways. 

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Aug. 06, 2022

Which essential oil smells the best?

We almost want to say "all". Each oil has its own scent character and there are so many exciting things to discover. Below are some of the most popular oils, all of which are very easy to appreciate for their fragrance:
Sunshine (Cheerful, uplifting, exotic and floral blend of three essential oils.) 
Go to sleep (Calm and pleasant scent that is in no hurry. Like a fluffy blanket on a cold fall evening. Incredibly pleasant scent. Blend of three essential oils).

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Aug. 05, 2022

Essential oils and pets

Keep in mind that dogs and cats have a much stronger sense of smell than humans. Therefore, if you have pets at home, we recommend that you use the timer setting on your diffuser and let it run for a maximum of 1 hour at a time, twice a day.

You may also want to consider not using too much essential oil. As I said, dogs and cats have a better sense of smell and can smell more strongly than humans!

Also, make sure that the diffuser is not placed right next to your pet's sleeping area. Fragrances from the essential oil end up to some extent around the machine itself.

Also, make sure your pet can always get to a room where there is no diffuser running, so they can walk away if they don't like the smell.

Among the oils in the Evoroma range, oregano should not be used if you have a dog or cat. Citrus oils should be avoided if you have a cat.

Three oils that are considered completely safe for both cats and dogs are lavender, chamomile and frankincense.

Never use any essential oils directly on the animal's fur.

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