For thousands of years, black caraway seed oil—also called black seed oil or Nigella sativa oil—has been a staple in traditional medicine.
Ancient Egyptians, Greeks, and Ayurvedic healers believed the plant and its oil could heal dozens of different conditions. Now, thanks to modern research, we know that some of these beliefs may be true.
Early studies suggest that black seed oil may help with breathing problems, skin issues, inflammation, and more. That said, most benefits still require further study.
Even so, many people continue to use black caraway seed oil today for these reasons and others.
Black seed oil has strong antibacterial and anti-inflammatory effects. Thanks to these properties, it may be an effective treatment for acne.
A 2020 double-blind clinical trial studied the effects of a black seed oil gel on acne and found that, in just two months, it led to a 78% reduction in acne severity.
These same effects could also reduce redness and support skin healing.
Psoriasis is a chronic skin condition that causes itchy, scaly patches. People with the condition often struggle to find relief. Black seed oil may calm inflammation and improve skin lesions, soothing symptoms.
In one review, researchers noted that a combination of oral and topical black seed oil provided these benefits. More human studies are needed, but the early results are promising.
Some evidence suggests black caraway seed oil could help wounds heal faster. One study found that an extract of N. sativa promoted the healing of oral ulcers.
Researchers believe this effect may stem from its ability to boost collagen production and lower the risk of infection.
While additional studies would help confirm this, black seed oil and its extracts are already included in many over-the-counter creams for wound care and skin repair.
For people experiencing thinning hair, black seed oil might offer a natural solution. Many shampoos and creams include black caraway seed oil and claim to support hair growth and thickness.
While some of these claims are debated, some studies suggest that it may reduce inflammation-related shedding and promote regrowth. More research would clarify the full extent of its effects.
Thanks to its anti-inflammatory properties, black seed oil may help with conditions that involve airway swelling, like asthma. When a person with asthma encounters a trigger, the airways swell and restrict airflow.
According to case reports, black seed oil reduced inflammation—even during asthma attacks—leading to easier breathing. It may also help regulate immune responses in other related conditions.
One lesser-known use of black seed oil is for treating vitiligo, a chronic condition where patches of skin lose pigment. Treatment options are limited, so people often turn to alternative solutions.
In a 2019 study, black seed oil cream improved pigmentation in individuals with vitiligo. Experts believe this may be due to its ability to spread melanin, the pigment responsible for skin color. The effect was slow and modest, but further research may improve outcomes.
Black seed oil's anti-inflammatory abilities are a key reason it may benefit so many conditions. Chronic inflammation contributes to major health issues like diabetes and heart disease.
A growing body of research suggests that even modest inflammation reduction could bring relief to many people. Since black seed oil is generally non-toxic, a small daily dose may be a safe and helpful addition for some.
Many people struggle with weight loss despite making dietary and fitness changes. Black seed oil and other N. sativa products have shown potential to modify fat metabolism and reduce appetite or cravings.
While more research is needed to confirm long-term safety and effectiveness, it could offer support alongside healthy lifestyle changes.
In one study, daily supplementation with N. sativa seeds for three months led to significant drops in blood sugar, insulin resistance, cholesterol, and even weight.
For people with prediabetes or type 2 diabetes, even small improvements can make a big difference. While black seed oil is not a substitute for medication, using it with medical guidance might offer additional benefits.
Metabolic syndrome refers to a combination of high blood pressure, blood sugar, and cholesterol. These three issues increase the risk of heart disease and diabetes.
In small studies, black seed oil and its primary compound, thymoquinone, helped reduce the severity of these symptoms. Used alongside lifestyle changes, it may offer support in managing this condition.
Most experts consider black seed oil to be low in toxicity and generally safe for short-term use. Clinical doses typically range from 2,000 to 5,000 mg per day.
However, more data is needed on long-term safety. Before starting any new supplement, especially if you're taking other medications, talk to a doctor.
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.