The Ultimate Guide To Using Essential Oil Diffusers

by Penny Price May 16, 2020 8 min read

How To Use Essential Oil Diffusers

I get asked a lot about essential oil diffusers, so I want to give you the ultimate guide to why Penny Price Aromatherapy uses Zen Diffusers, which are considered the best on the market. Not only are they safe for you and your pet's but they are also easy to use... So let's dive in.

You will discover: 



How to use your Zen Diffuser?

  1. Choose a good location. Pick an open area in a room or office with a solid surface or tabletop. You will need an outlet to plug it in. Also, since water is being used, it is good to have a placemat or towel down if you are using on a wood surface.
  2. For best use, avoid placing in direct sunlight or near a fan. Place on a solid surface such as a bedside table, windowsill or worktop.
  3. Add Water. Once you have your place picked out, fill your diffuser water tank to the fill line of the water reservoir with clean tap water that is room temperature. Most diffusers have a water level line on the inside of the water reservoir or a measuring cup to fill up and then add to the reservoir, refer to your diffuser manual for the recommended water amount your diffuser requires. *DO NOT OVERFILL or your aroma diffuser may not run properly.
  4. Add Aromatherapy Oils. Add 3-10 drops of essential oils to the water. You can use a single essential oil like lavender, or an essential oil blend – take a look at the Nurture Blends that Penny Price Aromatherapy make especially for you. 

Here are the instructions from the Zen Manual in greater detail

Place the Aroma Diffuser on a flat surface, at least 60cm away from the floor and at least 10cm away from the wall. DO NOT place the Aroma Diffuser on wooden or polished furniture that may be damaged by water moisture.

Always unplug the Aroma Diffuser from the mains electrical supply when cleaning or filling with water. Always use the power adaptor supplied. Ensure the cable is secure to avoid tripping or knocking over the Aroma Diffuser. If the power adaptor is damaged, it must be replaced with a suitable adaptor provided by the manufacturer or its agent. Alternatively, a new adaptor can be purchased from your retailer.

Use a suitable measuring cup to fill the water into the water tank. Never attempt to fill water under a running tap or whilst plugged in. Do not fill the water beyond the max water level line. Carefully remove the excess water from the tank, away from the drainage outlet .

The Aroma Diffuser must be kept out of reach from children and pets to avoid risk of injury. Children should be supervised at all times to ensure they do not play with the appliance.

Keep the Aroma Diffuser in a clear space to allow the mist to freely spread and away from appliances especially those sensitive to water (e.g. TV and other electrical items) to avoid unnecessary accidents.

Always plug the adaptor into the DC socket before plugging into the mains.

NEVER touch the disc while the diffuser is plugged in as this could cause serious injury.

Do not immerse the unit in water or other liquids.

In case of any abnormal observations such as smoke, peculiar smells or noise, stop using the Aroma Diffuser immediately to avoid risk of an accident such as fire or electric shock. Unplug the adaptor immediately and contact your retailer from where you have purchased the Aroma Diffuser. Never wrap the adaptor with cloth or paper, as blocking the ventilation could increase the fire risk.

Never attempt to disassemble or repair the product as this may void your warranty and create a shock hazard. Contact your retailer if an internal inspection or repair is necessary.

When handling the device, please do so with care to avoid breakage. Accidental damage is not covered under the warranty.

The Aroma Diffuser is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

Always use water at room temperature and only use fresh, clean water from a reliable source. Do not fill the water tank with other chemicals or liquids other than water and a few drops of essential or fragrance oils.

The Aroma Diffuser must be cleaned regularly and should always be kept clean and dry when not in use. Never leave stagnant oil and water in the tank for prolonged periods.

Do not remove the covers during operation.

Place the diffuser on a firm, flat surface in upward direction.

Insert the AC adaptor into the base of the diffuser and connect to the mains 

Remove the cover by twisting anti-clockwise 

Add water to the water tank using a suitable measuring cup until the water reaches the max. Water level line. Then add a few drops of your favourite fragrance or essential oil 

Replace the cover by twisting in a clock-wise direction 

Once the mains supply is switched on, press the on button once. You will hear a beeping sound and a light will be visible, soon a mist will appear. Press the on button once more to turn off the Aroma Diffuser.

How to clean essential oil diffuser's

Always keep your Aroma Diffuser clean and dry when not in use. Never leave stagnant oil and water inside the tank for prolonged periods.

Firstly, make sure you disconnect the power supply. Then, empty the water tank via the drainage outlet, and then wipe it with a soft, damp cloth to remove any remaining oil from the water tank. Use a cotton bud to wipe the inside. For stubborn oil build up, use sanitary alcohol on the cotton bud if required, but do NOT use harsh detergents or bleach on the unit.

If the Aroma Diffuser does not generate mist (or generates little mist), clean the inside of the unit again


In the event of being knocked over during use, please follow the steps below to avoid malfunction.

  • Unplug the diffuser from the mains and remove the cover
  • Pour out any remaining water from the water tank
  • Shake the diffuser gently to drain any water from inside, then allow 24 hours for the diffuser to dry thoroughly

How many drops of essential oil should you use in your diffuser?

Add 3-10 drops of essential oils to the water. Usually, 6 drops of oil is enough but sometimes you may want more oil for a stronger scent. You can experiment with the essential oil amounts to see what you prefer.

Please don’t use oils such as citrus, citronella, lemon, tea tree or tagetes in your diffuser as these could damage your appliance. Essential oils can dissolve plastics so to ensure minimal damage, always clean out your appliance after use, thoroughly.

Using essential oil blends such as Nurture Peace, Nurture Joy, Nurture Love from the Penny Price Aromatherapy range of pre-blended oils, can reduce damage to your machine and also fill your space with calming, relaxing and uplifting aromas. Your diffuser has a built in soft glow light which can be used as a night light so you can also use oils to help you to sleep such as Nurture Rest.

How do essential oil diffusers work?

Our diffusers work by advanced ultrasonic technology, which produces vibrations at a frequency of 2 million times per second without using heat (heat alters and destroys the properties of essential oils) releases tiny droplets of water vapour which are highly beneficial for our skin and general wellbeing and has been known to provide relief for symptoms of respiratory problems. Diffusers also improve air quality and prevents damage from second-hand smoke, stale air and allergens, while filling your space with the aroma of your choice whenever you want it. 

Is it safe to inhale essential oils from a diffuser?

Diffuser function as an ioniser by releasing negative ions into the air (known as “air vitamins”) which combat harmful positive ions.  This provides many health benefits e.g. improves breathing, strengthens the immune system, etc.

Negative ions are odourless, tasteless, and invisible molecules that we inhale in abundance in certain environments. Think mountains, waterfalls, and beaches. Once they reach our bloodstream, negative ions are believed to produce biochemical reactions that increase levels of the mood chemical serotonin, helping to alleviate depression, relieve stress, and boost our daytime energy.

Generally speaking, negative ions increase the flow of oxygen to the brain; resulting in higher alertness, decreased drowsiness, and more mental energy.

They also may protect against germs in the air, resulting in decreased irritation due to inhaling various particles that make you sneeze, cough, or have a throat irritation.

Are essential oil diffusers safe for dogs?

I have used diffusers in my home for many years, and my 2 black Labradors and my cat seem to be fine with them. However, it is worth remembering that dogs have a much finer sense of smell than humans, and so you really do need to keep your drops down to about 3 (maximum) when diffusing near pets. Secondly, you need to ensure that you are using very high-quality essential oils, not synthetic perfumes, or poor, questionable essential oils.

Many of us love the aroma and effects of essential oils and often use diffusers around the house. If you live with a dog, or have canine visitors, we encourage you to check our list below of the essential oils that are safe for dogs.

The droplets dispersed from a diffuser may be small, but they can still pose a risk to dogs. Depending on the dog’s proximity to the dispenser, the essential oil micro droplets may collect on the dog’s coat, and the oil can be absorbed directly through the skin or ingested if the dog licks itself, but this is usually in extreme cases where far too much essential oil has been used. In normal use, the spread of 3 drops in a whole room would not have this effect. 

The following essential oils are recommended by many aromatherapists and pet therapists.

  1. Cedarwood, Atlas (Cedrus atlantica)
  2. Chamomile, Roman (Anthemis nobilis) 
  3. Clary sage (Salvia sclarea)
  4. Eucalyptus radiata (Eucalyptus radiata)
  5. Frankincense (Boswellia carterii)
  6. Geranium (Pelargonium graveolens)
  7. Ginger (Zingiber officinale)
  8. Helichrysum (Helichrysum italicum) 
  9. Ho Leaf (Cinnamomum Camphora Linalooliferum)
  10. Juniper Berry (Juniperus communis)
  11. Lavender (Lavandula angustifolia). 
  12. Mandarin (Citrus reticulata) 
  13. Marjoram, Sweet (Origanum marjorana) 
  14. Orange, Sweet (Citrus sinensis). 
  15. Palmarosa (Cymbopogon martini)
  16. Petitgrain (Citrus amara fol)
  17. Rose (Rosa damascene)
  18. Valerian (Valeriana officinalis) 

This is not a complete or exhaustive list and you must seek guidance if you are in doubt.


Checkout our diffusers here


What our lovely customers say about us...

"Beautiful oil which I have used in a diffuser and in a Bath mixed with other oils. It also came really quickly! Thank you" -Mary



Try our line of Aromatherapy Products by Penny Price! You’ll love it.



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Penny Price
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1 Response

Julie Milton
Julie Milton

March 23, 2021

I have been asked about aromatherapy oils for nausea. Any advise or suggestions? Thanks, Julie

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