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Dangers huile essentielle d'eucalyptus globuleux

What are the dangers of Eucalyptus Globulus essential oil?

The numerous benefits that eucalyptus globulus essential oil brings to the skin have led to its inclusion in the formulation of various cosmetic treatments under the INCI name "Eucalyptus Globulus Leaf Oil". However, before using it, it is advisable to carry out certain checks. Here, you will find the various contraindications and precautions to be observed for safe application.

The essential oil of Blue Gum Eucalyptus, in brief.

The common eucalyptus, or Blue Gum, is a majestic tree from the Myrtaceae family, naturally flourishing in the southern regions of Australia. As an iconic plant of Tasmania, the eucalyptus, and more specifically the essential oil extracted from its leaves, is recognised in pharmacopoeia for its purifying, antibacterial, and anti-inflammatory properties. It is a true ally for blemished skin.

essential oil of eucalyptus globulus acts against certain Gram-positive bacteria including Cutibacterium acnes , the bacterium involved in the pathogenesis of acne. By increasing the permeability of the bacterial walls, this botanical extract causes the leakage of bacterial proteins, which ultimately leads to the death of the microorganisms.

Furthermore, the essential oil of Eucalyptus globulus helps to reduce inflammation associated with acne by inhibiting arachidonate 5-lipoxygenase, an enzyme responsible for inflammatory phenomena. These various properties are derived from its biochemical composition, particularly from the eucalyptol (1,8-cineole) it contains, which is its major compound.

Active IngredientsPercentage
Eucalyptol (1,8-cineole)≥ 70 %
Limonene0.05 to 15%
α-pinene0.05 to 10%
β-pinene0.05 to 1.5%
Geraniol≤ 0.5 %
Sabinene≤ 0.3 %
Camphor≤ 0.1 %

Are there any contraindications to the topical use of globulus eucalyptus essential oil?

The essential oil of Eucalyptus globulus is a staple in aromatherapy and can be used for anything from decongesting a blocked nose to improving skin texture. Moreover, it's worth noting that it is not photosensitising : its use is therefore not limited in summer or on days of intense sunlight. However, it should be noted that its pure topical application is not recommended due to the allergens present in its composition (eucalyptol and limonene in particular).

Furthermore, individuals with particularly sensitive skin such as pregnant and breastfeeding women and children under six years old must exercise caution when using eucalyptus globulus essential oil and pay heightened attention to the instructions provided by the supplier.

What precautions should be taken before applying eucalyptus globulus essential oil?

The compounds responsible for the intriguing properties of Eucalyptus Globulus essential oil, such as eucalyptol and limonene, have a downside: they are potentially allergenic and can prove to be irritating for sensitive skin. To avoid any unpleasant surprises, we recommend you carry out a tolerance test before incorporating Eucalyptus Globulus essential oil into your skincare routine.

It should also be noted that, although the concentration of eucalyptus globulus essential oil in skincare products is not limited by the European Regulation on cosmetics, it is advisable to dilute it in a vegetable oil before using it, especially for those with sensitive skin. A 10% dilution is generally recommended and is sufficient to enjoy its benefits. Furthermore, like all essential oils, the one derived from common eucalyptus should not be applied to the mucous membranes, nor around the eye area.

Regarding storage conditions, it is recommended to keep the oil at room temperature, away from intense heat which can cause it to evaporate. Also, ensure that the bottle is always tightly sealed when you are not using the oil. This will prevent it from oxidising when exposed to air, and its active ingredients from deteriorating and losing their effectiveness. Finally, we advise you to keep the eucalyptus globulus essential oil out of direct light, as this can potentially damage it.

Sources

  • BOULEKBACHE-MAKHLOUF L. & co. Chemical composition, antibacterial and antioxidant properties of essential oil of Eucalyptus globulus originating from Algeria. Industrial Crops and Products (2015).

  • LOBSTEIN A., COUIC-MARINIER F., KOZIOL N. Essential oil ofEucalyptus globulus. Pharmaceutical News (2018).

  • DEMIRCI F. & al. In vitro assessment of antimicrobial, antioxidant and anti-inflammatory properties of Eucalyptus globulus essential oil. Natural Volatiles and Essential Oils (2020).

  • HELDRETH B. & al. Safety evaluation of Eucalyptus globulus (Eucalyptus)-derived ingredients utilised in cosmetics. International Journal of Toxicology (2023).

  • Regulation (EC) No 1545/2023 of the European Parliament and Council.

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