While it may look unsuspecting, the shrub produces fruits that have tiny black seeds. These black seeds have been used in remedies for thousands of years. Black seed oil has several applications and benefits for problematic skin conditions. The oil is found in many health foods stores and pharmacies. They’re also used in cooking to add flavor to breads, curries, and pickles. When eaten, the seeds have a bitter flavor that’s often compared to cumin or oregano.