Glossary of molecules



Also called eucalyptol, The World Health Organization recognizes the use of essential oil to treat inflammation of the airways, throat or mucous membranes in the mouth (internally)
in three clinical trials, the 1,8-cineol in eucalyptus has been shown to be “effective in reducing the dose of corticosteroids” used by people with asthma and in fighting colds.
Tests on mice have shown that “eucalyptus exerts an anti-pain activity”. It is generally believed that this activity is attributable to the antioxidant properties of the plant.


 It is known for its antiseptic properties. It can also be prescribed in case of bronchial hypersecretion.


By ozonolysis, 3-carene can be transformed into aromas. It can be used as a raw material for the synthesis of menthol.


Component of ylang ylang essential oil, has antifungal and antibacterial properties.


To improve chemotherapy against cancer. Limonene is used in particular in perfumery.

Limonene takes its name from the lemon which, like other citrus fruits, contains considerable amounts of this chemical compound, which is largely responsible for their scent. Like the main scent that makes up citrus fruits (Rutaceae family), D-limonene is used in the food industry as well as in the pharmaceutical industry to flavor drugs, especially bitter alkaloids. It is also used in cleaning products for its refreshing orange-lemon scent and dissolving effect.


Has sedative properties, it is an anti-inflammatory muscle relaxant, present in the essential oil of sweet orange



Beta-caryophyllene is renowned for its anti-inflammatory, antiviral, antispasmodic and anticolitic properties. It thus helps to control and significantly reduce pain.
It is also a powerful ally in the treatment of anxiety, stress and depression thanks to its anxiolytic and anti-depression actions.


Eugenyl acetate

It is found in all leaf distillations, it is the major component of clove essential oil, has sedative properties

Citronellyl format

It is found exclusively in the essential oil of geranium, has antispasmodic and sedative properties



Or citral A, from the citral family


Or citral B, from the citral family, with a milder lemon scent


Citronellal was used to make industrial menthol.


Or lemonal, a major constituent of lemongrass essential oil which has anti-inflammatory properties



Eugenol is widely used in pharmacies, especially for its antiseptic and analgesic properties. This molecule is found in many drugs, especially in mouthwashes to treat infections, but it is also found in an ointment to facilitate breathing during pulmonary diseases.

Eugenol is hepatotoxic.


Alcohol corresponding to geranial, in the form of a colorless liquid which gives off a pleasant smell of rose, has bactericidal, fungicidal, virucidal, sedative, spasmolytic properties



Has effective mucolytic properties against respiratory infections. However, they are neurotoxic and hepatoxic. To be avoided by ingestion.





Fatty acids are lipid compounds that play a major role in the construction of cells, especially their membranes and in their energy supply.

There are several kinds of fatty acids: saturated, monounsaturated and polyunsaturated fatty acids.

Saturated fatty acids are mainly of animal origin, they are present in butter, cream, lard or bacon… Certain vegetable oils also contain them, such as palm oil for example. They promote the deposition of cholesterol in the arteries and, consequently, cardiovascular disease.

Unsaturated fatty acids are found mainly in plant products as well as in fatty fish such as salmon, sardines or tuna… They are particularly good for health and play a protective role for the cardiovascular system.

They fall into two sub-categories:

– Monounsaturated fatty acids, or omega 9

– Polyunsaturated fatty acids, or omega 3 and 6


Omega 3

The  omega 3  are part of the family of essential fatty acids. These are lipid compounds that the body cannot manufacture, or in insufficient quantities, and which must therefore be provided through the diet.

Yet very useful in the prevention of cardiovascular diseases and inflammation, omega 3 is often lacking, in favor of omega 6.

In the omega 3 family, 3 acids are identified:

– Alpha-linoleic acid

– Eicosapentanoic acid

– Docosahexanoic acid


Omega 6

Omega 6 are polyunsaturated fatty acids which are involved, among other things, in the construction of immune cells, improve healing, reduce inflammatory reactions and protect the cardiovascular system.

For omega 6 to be truly effective, it must be combined with a sufficient intake of omega 3.

In the omega 6 family, 4 acids are identified:

– Linoleic acid (the only essential omega 6 fatty acid)

– Gamma-linoleic acid

– Dihomo-gamma-linoleic acid

– Arachidonic acid


Omega 9

Omega 9s are non-essential monounsaturated fatty acids, the human body can synthesize enough omega 9 from the saturated fat contained in the diet in general.

Omega 9s are made up of several acids, the best known of which is oleic acid. They are involved in the prevention of cardiovascular diseases, as well as certain cancers, and in the reduction of cholesterol and hypertension.


Eicosenoic acid

Eicosenoic acid is better known as arachidic acid. It is present in jojoba essential oil which has moisturizing, nourishing and revitalizing properties. It is present in beauty products to nourish oily hair and skin.

Linoleic acid

Found in many vegetable oils, linoleic acid is one of the essential fatty acids of the omega 6 family.

The human body not knowing how to synthesize it, it must necessarily be provided by food.

Linoleic acid is involved in the manufacture of cell membranes, it is the precursor of all omega 6 fatty acids, so all other fatty acids of this family can be produced from linoleic acid.

Inside our skin, linoleic acid is part of the composition of ceramides, which themselves are part of the lipid cement, a real protective barrier of the epidermis.

A deficiency in omega 6 will result in an intense dryness of the skin, a less radiant complexion, brittle and dull hair….

 Ricinoleic acid

Ricinoleic acid is the main component of vegetable castor oil. It has intense and irritating purgative properties. It should therefore not be used orally. In the cutaneous route, ricinoleic acid is an excellent moisturizer and nourishing skin.

Oleic acid

From the omega 9 family, oleic acid constitutes 55% to 80% of the fatty acids in olive oil. Very present in the human body, it protects the cardiovascular system and reduces cholesterol.  

In cosmetics, oleic acid is a very frequently used ingredient. Known for its nourishing properties, it helps strengthen the hydrolipidic film which helps the skin to retain its elasticity and suppleness. It also has restorative and healing properties.

For information, the saturated form of this acid is stearic acid.