This oil is solvent-free, and contains no carrier oils. It is Guaranteed 100% Pure. Each batch is manufactured to the highest quality standards, free from pesticides, gluten, heavy metals, and preservatives. Nigella sativa oil is 35% more concentrated than raw black cumin seeds . The oil is rich in essential fatty acids (EFAs) and these EFAs consist of alpha-Linolenic acid (omega-3) and Linoleic acid (omega-6), which are substances that cannot be manufactured by the body, and thus must be consumed through high-EFA foods or supplements. EFAs are essential to good health for those that have struggled with poor liver function due to medication side effects, alcohol consumption, or disease, black seed oil could greatly speed the healing process of the liver.