Physalis Spearmint Essential Oil 10Ml. Bio is a high quality spearmint plant essential oil. This essential oil is obtained by a steam distillation process from the leaves of the spearmint plant. It is known for its refreshing and stimulating properties, and is commonly used in aromatherapy and massage to relieve stress and promote relaxation. This product is organically sourced, which means it is grown without the use of pesticides or harmful chemicals.