Essential oils such as eucalyptus, lavender, and tea tree are frequently incorporated into boiling water for facial steaming. These oils emit aromatic vapors that can aid in opening pores, purifying the skin, and inducing relaxation. Depending on the specific oil, they can also impart antibacterial or soothing properties. Conversely, coconut, sesame, and olive oils are carrier oils designed for direct application or massage and are unsuitable for steaming water. Introducing these denser oils into steam is unlikely to yield therapeutic benefits for inhalation or facial pores. Consequently, essential oils are the optimal selection for steaming applications.