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How to use essential oils ?

How to use


Because pure essential oils are so powerful, it is extremely important to follow dilution rates, instructions, and safety precautions. All is for informational purposes only and is not intended to be a substitute for professional medical advice.

Essential oils can be administrated in three ways: through the respiratory tract, by dermal application and taken internally.

1. Respiratory tract

inhalation illustrationInhalations

*Humid: add 3 to 5 drops of EO in warm water, close your eyes, place your nose above the rim of a bowl with a towel over your head and breathe in the vapours for about 10 minutes

Indications: head cold, chill…

*Dry (olfaction): place a few drops on a clean handkerchief and breathe in deeply.

Indications: stress, nausea….

Atmospheric diffusion allows the purifying of the air. To benefit fully of the properties of essential oils, a diffuser is the most suitable (a few drops suffice). The use of an incense burner is more decorative…

Examples: relaxing diffusions (lavender, citruses, geranium); children (mandarin, petitgrain); respiratory (ravintsara, cedarwood); mosquito repellent (eucalyptus, geranium); anti-infectious (Melaleuca, grapefruit)…

2. Dermal application

Essential oils penetrate the skin and reach the blood vessels.

Essential oils can spread through the entire organism by traversing the skin surface and spreading to all our cells, then being absorbed and joining the body’s blood circulation thus acting on the entire body (organs, glands…) or in the place where it is to be active.

On the skin, you can apply essential oils in four ways: by massage, by compress, in the bath or under the shower.


essential bath oilEssential oil bath

The oil does not dissolve in water. You must mix with a product to dilute easily before pouring it into the bath water (a shower gel, milk, bath salts). This will prevent skin irritation or burning.

Ideal temperature: 36-38°C

Duration: 15 to 20 minutes

Dosage: Mix with a neutral base, EO don’t mix with water

Children: 2 to 3 drops of EO / Adults: 5 to 10 drops of EO (no more than 10 drops, half of that dose for kids over 8)

Advice: Do not wash after the bath. Dry yourself lightly so as to allow the EO to act on your skin. Avoid eye contact.

Indications: fever, cellulite…

Examples: pain relief baths (lavender, eucalyptus); skincare baths (ylang-ylang, geranium); stimulating baths (lemon, linalool thyme); anti-cellulite baths (eucalyptus, lemon)

Essential oils for massageessentialoils for massage

In massage, you can use essential oils directly on the skin if

you mix them with other vegetable oils.

These will be virgin cold-pressed without chemical treatment

and will be chosen according to taste or indications.


Essential oils in compress

6 to 10 drops of EO on a compress or a cotton square and apply directly on the affected area for about 20 minutes.

3. Taken internally

Always ask medical advice before taking essential oils internally

By mouth:

When used internally, essential oils are never taken purely to avoid burning mucous. It is therefore diluted in oil or honey for example. The dosage has to be respected (one drop per 25 kg body mass 3 times a day – all oils combined and no treatment of more than 3 days should be undertaken without the advice of a health professional).

Such absorption will not be made on an empty stomach nor is it recommended for people suffering from inflammatory problems of the upper gastrointestinal area.

And in cooking?

Some essential oils can be used in the preparation of some dishes (the addition of essential oil is always done at the very end of the preparation):

*aromatic herbs (basil, rosemary, thyme,…) in extra virgin olive oil, for example, spices (cinnamon…)

*citruses (lemon, orange…)

Respect the dosage stated as a too-concentrated amount will “spoil” the dish.

1 or 2 drops is enough for a whole dish.

By rectal route

Make your own suppository with a pharmacist’s formula. You can buy the molds HERE

Complete your name and email to receive a free documentation.


4. What is the recommended dilution?

For a massage oil applied to an important surface (relaxation), the dosage of EO is 3 to 5 % in a base oil.

For a massage oil applied to a specific area (cellulite, burn…) the dosage of EO is 4 to 8 % and up to 10 % for a therapeutic application (3 % for children) in a base oil.

On very rare occasions you can apply EO purely on a small skin surface and when certain of perfect skin tolerance of the essential oil used (eg. Lavender), a few essential oils can be applied directly on the skin, some being irritant, others provoking skin stains when exposed to the sun. See chapter on precautions

The complete post here

Precautions for use

Pure Essential Oil (EO) are powerful concentrated substances that can present undesirable effects and contraindications. You need to take numerous precautions when using them.

We recommend consulting a specialist and always seeking the advice of your doctor before using an EO.

More information on QLD Health


1. Contraindications

  • CHILDREN: keep containers of EO out of reach of children (some containers have a safety cap). As a general rule, don’t use essential oils with children under the age of three (except if you have a medical advice).
  • PREGNANT WOMEN or nursing mothers: ask a medical opinion
  • People suffering from hepatitis, allergic or sensitive, having had seizures or convulsions need to be extra careful
  • Asthmatics need to avoid essential oils diffusion in their homes.


2. Usage

  • Always wash your hands after a dermal application or a massage
  • Never apply essential oils near or in the eyes, mucous or ears

In the case of eye contact, do not use water (EOs do not dissolve in water) but wash with vegetable oil (preferably almond oil) on a cotton swab or directly on the eyeball. Finish with water or a hydrosol. Consult an ophthalmologist for further precautions.

In the case of accidental intake, do not drink water but try to vomit by ingesting vegetable oil (1 to 3 tablespoons). If it is an important amount or if the person is a child, contact the nearest anti-poison centre.

In all cases, consult your doctor if in doubt or in the case of serious pathology.

  • Do not diffuse continuously or close to young children (diffuse for 10 minutes before they enter the room).

3. Adverse effects

  • Abortive essential oils: they are strictly forbidden for pregnant women as they may cause a miscarriage (ex. peppermint, organic sage, vetiver, eucalyptus or eucalyptus dive, Italian Helichrysum,…)
  • Allergenic essential oils and/or irritating for the respiratory tract: certain molecules (phenols and ketones) may trigger allergies or asthma, notably in the case of atmospheric diffusion (ex. Yarrow, cinnamon, cypress, fragrant inula, lemon balm)
  • Skin sensitive essential oils: certain natural substances are very irritating to the skin and mucous and may provoke burns or irritation. (ex. Possible skin sensitivity: dilute up to 20% at most in a vegetable oil: Dill – exotic basil – citruses (Lemon mandarin – sweet orange) –citronella – tarragon – ginger –  lemongrass – Lemony litsee – marjoram – melaleuca – pines – sandalwood – linalool thyme – peppermint; Strong skin sensitivity: dilute between 5 and 20% at most in a vegetable oil: Ajowan, cinnamon, clove, oregano, savoury, thymol thyme.
  • Neuro-toxic essential oils: these oils contain ketones and lactones that act on the nervous system. Do not use with young children and with pregnant or breastfeeding women (ex. Dill – camphor – Italian Helichrysum –  CT verbenone or camphor rosemary and even Peppermint) A complete blog post here
  • Photosensitive essential oils: these oils react to light and you should, therefore, keep away from sunlight (wait several hours after usage) in order to avoid permanent skin blemishes (ex. Angelica, bergamot, celery, sea cistus, lemon, fennel, mandarin, neroli (orange blossom), orange, grapefruit, petit grain, exotic verbena. A complete blog post here 

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5. The allergy test

We strongly recommend this test before using an essential oil, even more so if you have a tendency to be allergic. In order to test the EO, put a drop in the crook of your elbow and wait for 15 to 20 minutes. If nothing happens, no redness or disagreeable feeling, it would indicate that you can use it safely.


– 1 pure drop in the crook of your elbow or behind your ear if the EO is not skin sensitive

– 1 drop of EO + 1 drop (or 2) of vegetable oil if you are dealing with an irritating essential oil.

A complete blog post here


3 criteria for the dosage of essential oils in your preparations: the essential oil (its chemical composition), the expected result and the total dose (frequency/duration/cumulated surface)

  • The essential oil: one doesn’t use in the same way a dermo-caustic or irritating (skin sensitive) essential oil and a “gentle” essential oil, well tolerated by the skin.
  • The type of usage: for one’s well-being, as a perfume, for a cosmetic purpose or as a remedy
  • On what skin surface and how often will the preparation be applied. One refers to the total dose that will be finally absorbed through the skin: on a pimple, two or three times is different from massaging both legs daily.

Order of magnitude for the dosage of essential oils

1/ The first question that needs answering is: on what is my essential oil going to act: the epidermis, a muscle, nerves?
  • cosmetic usage, on the skin’s surface (ex: dilated pores, blackheads, wrinkles): 1%
  • dermo-cosmetic action, on the skin, more deeply (ex: blood vessels as in the care of rosacea): 3%
  • wellbeing action, on the nervous system, up to 5%
  • circulatory action, muscles, tendons (it is more about physical relief): 10%
  • lipolytic action, on fats: 20-30%
  • strong local action (therapeutic care – beyond relief): 30%

The cumulative 10 drops dose (around 250mg / day)

2/ The second question to ask oneself is: regarding the dosage, the quantity I wish to apply daily (skin surface + frequency), will I exceed the adult limit of 20 drops of essential oil/day? If you use several creams, shampoos or other essential oils, it does cumulate.

For a short-term application on a small area (a pimple for example), you can apply it pure or at 50% within the framework of being sensible (with tea tree oil on warts or with niaouli on fever blister for example).

For an application on a large area, a concentrated mixture: so, dilute ravintsara at 50% in chest massage to get rid of bronchitis. In this case, take care to remain within the 20 drops a day for an adult.

Beyond 20 drops, the body cannot eliminate within 12 hours. Over several days the body will not succeed in eliminating little by little and the risk of “overworking” organs such as the liver and the kidneys (all the more with hepato-toxic or nephro-toxic essential oils)

Please note, that this threshold of 20 drops goes down to:

  • 10 drops at puberty,
  • 5 drops of essential oil below the age of 6-8 and
  • below the age of 3, you absolutely need the advice of a therapist to avoid committing mistakes.

All essential oils are not as good as each other.

3/ The third criteria to consider regarding the specificity of an essential oil, for a cosmetic use, and therefore prolonged use, is to leave out all dermo-caustic oils, to be cautious with doses of citrus oils (zests) before sun exposure. Find the dangers listed in the paragraph “4-adverse effects”.

However, even if you took all three criteria into consideration before determining dosage, one needs to remain attentive to the body’s reactions, the possible changes (redness, itchiness,…). Remember that if each essential oil has its specificities, so do humans.

The dosage for certain people will also need to be modulated in regard to the essential oils selected: people suffering from asthma, liver failure, hormone-dependent pathologies, allergic terrain, pregnant women, babies, etc.


1. Do not expose to sunlight

Do not store them in a glass cupboard on which the sun shines or a shelf next to a window. They like neither heat nor light. Ban any source of light or artificial heat.

2. Choose opaque bottles

The added cardboard packaging of certain brands may result in better conservation if the oil is in clear glass but is it really necessary from an ecological viewpoint?

3. Neither heat nor humidity

Avoid storing them in the bathroom. It is far better to store them in a dark, fresh and dry place. We keep all our oils in a wine cellar. This allows for optimal conservation of the oil and its properties.

4. Storing them head up

Some essential oils have a corrosive action and the prolonged contact with the plastic dropper tip could harm the bottle.

5. Do not put your fingers in the bottle

This is tempting for some oils (rarely the case) that you can be apply undiluted to the skin. Your fingers’ contact with the stopper and all the impurities it carries will alter the strength of your essential oil.

6. Don’t forget to close it

Aromatic compounds are volatile. Therefore, don’t leave a bottle open and resealed immediately. Furthermore, the contact with air will provoke an oxidation that will eventually shorten the life of your essential oil (this is why it is sometimes advised to pour the remaining content in a smaller bottle when half empty).

7. Time shelf

When do essential oils expire?

  • Citrus: one to 2 years
  • Essential oils with aldehydes and terpenes:  2 years
  • Essential oils with 1.8 cineole:  3 years
  • “Heavy” essential oils (patchouli, vetiver, sandalwood, cedarwood virginiana, ylang-ylang) can go up to 6 / 8 years, those ones improve with age
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