A warming aroma, calming for the digestion and stimulating for the appetite. Also helpful as a muscle rub when used in massage oil before and after exercise. 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. Black Pepper Oil (Piper nigrum) Oil 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.