Fennel seed oil is an essential oil extracted from the seeds of the fennel plant, also known as Foeniculum vulgare. It has a warm, sweet, and slightly licorice-like aroma. It is known for its digestion-supporting properties and has been traditionally used to help with upset stomach, bloating, and gas. Fennel seed oil is also believed to have estrogen-like properties, which may make it useful for treating certain menstrual and menopausal symptoms. It is also used to promote lactation and help with colic in infants. Fennel seed oil is typically used in traditional medicine, aromatherapy and massage, it's also used as a flavoring agent in food and beverages. It is considered safe for most people when used topically in small amounts, but it's always best to do a patch test before using it and to consult with a healthcare professional before using it internally as large doses may cause skin irritation, and other adverse effects.
