Most people are familiar with chamomile tea. However, the species most often used for tea production is Roman chamomile, also known as English chamomile. German chamomile contains a higher azulene content, the organic compound that lends the essential oil its skin soothing properties and its deep blue color. The oil is also used in aromatherapy to counter stress and insomnia.
German chamomile essential oil contains several other active compounds, including thujanol, bisabolol and farnesol. Note that the latter is associated with allergic reactions in people with a known sensitivity to plants in the daisy family.