This essential oil is an excellent aid to digestion, is also a general tonic to the circulatory system and the respiratory tract. Helps calm menstrual pains. HealthAid pure essential oils can be used as essences in the bath or in vaporisers. They can also be used to make up your own massage blends having first diluted them in HealthAid massage oil base or lotion base. Aniseed Oil (Illicium verum) Oil 1 HealthAid pure essential oils can be used as essences in the bath or in vaporisers. They can also be used to make up your own massage blends having first diluted them in HealthAid massage oil base or lotion base.