It is a relatively well-established practice when oil is consumed in diluted form, for example, as part of a beverage. However, this technique should be consulted with an experienced aromatherapist. Some types of oil can be used internally in the prescribed amounts, but only for specific problems (such as digestive problems) and under the supervision of a qualified therapist. Herbal teas are a safe example.
Gargling is another option. You can drip 1-3 drops of essential oil into a glass of warm water and mix it. This mixture must be gargled but not swallowed.
Illness and injuries must be consulted with a physician who will suggest the correct procedure. Treatment with natural methods is based on long-term experience, but is not based on scientific knowledge and clinical studies.