Black seed oil is extracted from the seeds of Nigella sativa, a plant native to southwest Asia and is used for a multitude of purposes such as cooking, diabetes and as a fitness supplement. Rich in anti-inflammatory properties, this oil is known to reduce the presence of nasal congestion, sneezing, runny nose and itching. In addition, black seed oil is said to boost the immune system, reduce inflammation, and fight infections. The oil is used topically for skin and hair concerns, such as acne, dry hair, psoriasis, hair growth, and dry skin.