4. Lavender
For many people, lavender, more professionally known as Lavendula Angustifolia, is one of the best essential oils. They use it for everything as it is one of the few categories that can help fix almost any problem. However, like all oils, you need to use them properly; otherwise, your skin may become irritated; you may experience nausea, vomiting, or chills.
Lavender not only helps with allergies (which is one of the main reasons it's used in cleaning solutions) but also relieves anxiety, depression and helps treat fungal infections, eczema, and other external illnesses skin. It is also known to help women with menstrual cramps.