Yarrow oil is extracted from an herbaceous plant that has been used for centuries for its healing properties. It is believed to have anti-inflammatory and calming effects, and is commonly used in aromatherapy to promote relaxation and reduce muscle tension. It is also believed to support immune system function and improve digestion. The aroma is sweet and herbaceous, with floral notes, making it ideal for adding to a relaxing bath or diffusing in an essential oil diffuser. It can also be applied topically diluted in a carrier oil to relieve muscle or headache pain. It is important to note that, as with any essential oil, it should be used with caution and always diluted before topical use.