Most vegetable oils consumed orally or applied through the skin are harmless. However, you should be aware of specific contraindications for some of them. For example, rapeseed oil is suspected of cardiac and even digestive risks; Evening primrose oil, taken orally, would cause epileptic seizures (in a person at risk). Others can give rise to an allergic skin reaction. As a precaution, people with allergies to gluten can refrain from the use of certain oils such as wheat germ oil.

Also note the importance of consulting the mode of use of vegetable oils since some become toxic when cooked. In addition, some oils are photo-sensitizing and contraindicate exposure to the sun after skin application (for example: St. John’s Wort).

While some oils can withstand room temperature, others need to be stored in the refrigerator. As a precaution, it is advisable to place the bottles of vegetable oil away from heat and light (moreover, the container of vegetable oil is opaque because quality oils do not tolerate the light).

Depending on the desired objective, vegetable oils can be used in several ways.

If you want to respond to a dermatological disorder, you can use it through the skin:

• In local application: on the body, face, nails, hair, scalp
• A massage
• In anointing
• In the bath (mixed with a surfactant such as liquid soap)
• In association with essential oils (aromatherapy).

For pleasure or to ensure your health, you can also taste vegetable oil by mouth.

Here we distinguish between the cutaneous and nutritional uses of vegetable oil based on the desired benefits. However, in some cases, the absorption of a vegetable oil by the oral route can favorably influence certain dermatological conditions. Likewise, it is possible to wonder about the effectiveness of a vegetable oil used by the cutaneous route on a physical pathology induced by a psycho-emotional or nervous imbalance.

Reminder :

The botanical and organoleptic peculiarities of vegetable oils are likely to change depending on the production conditions (country, sunshine, etc.) and its method of extraction. To ensure its quality, it is recommended to select an extra virgin oil, obtained by cold pressing and of biological origin.

In order to determine certain dosages, here are notions of equivalences in terms of volumes: