Essential oils are used in aromatherapy as alternatives to Western medicine to relieve stress, anxiety, headaches, migraines, and fight bacterial infections. Research has demonstrated that aroma therapy may improve memory, sleep quality, and reduce inflammation. Additionally, essential oils have been shown to provide temporary relief to some dementia patients.

Many people use essential oil fragrances in their homes and as natural insect repellents. Furthermore, the cosmetic industry increasingly infuses essential oils into commercial products. Essential oils can be inhaled (nebulized) or directly applied to the skin..