https://tisserandinstitute.org/essential-oil-ingestion/
It's imperative that qualified Aromatherpist's educate on the ingestion of essential oils. The article link above, explains this well.
Essential oils are mostly lipophilic, meaning that they have an affinity for fats or lipids, such as fatty oils, skin lipids, and the membranes of our cells. They are also hydrophobic, that is, they repel water – they do not mix with it – just like when we try to mix a drop of cooking oil in water: it does not mix and floats on top of the water.