Essential oils are volatile liquids extracted from plants that can be used in various ways like inhalation, baths, and massages. They are made through distillation or expression of plant materials and can contain hundreds of biochemical components like terpenes, alcohols, aldehydes, acids, esters, ketones, lactones, oxides, and phenols that give them therapeutic properties such as being anti-inflammatory, antiseptic, and antimicrobial. Essential oils evaporate quickly when exposed to air with higher temperatures causing faster evaporation.