What is the recommended dosage for Black Seed Oil?

Hair Loss: 1-2 tsp/day or topical application

What are the side effects of Black Seed Oil?

Potential side effects include: Contact dermatitis when applied topically, Gastrointestinal discomfort, May lower blood sugar levels, Possible allergic reactions.

Can black seed oil help with hair loss?

Black seed oil (Nigella sativa) contains thymoquinone, a bioactive compound with anti-inflammatory and antioxidant properties. A 2014 study in the Journal of Dermatology & Dermatologic Surgery found that a herbal hair oil containing Nigella sativa improved hair density in participants with telogen effluvium. While preliminary research is promising, larger controlled trials are needed to establish efficacy specifically for hair growth.

How is black seed oil typically used for hair?

Black seed oil can be applied topically to the scalp or taken orally as a supplement. Topical application may support scalp health through its anti-inflammatory properties, while oral supplementation provides systemic antioxidant support. Research has explored both routes, but there is no consensus on optimal dosing. Consult a healthcare provider for guidance.

How does black seed oil promote hair growth?

Black seed oil (Nigella sativa) contains thymoquinone, a compound with anti-inflammatory and antihistamine properties that may reduce immune-mediated hair follicle disruption. Research across 25 studies with 696 participants supports its role in both telogen effluvium and alopecia areata. Thymoquinone may help modulate the inflammatory signals that trigger premature hair follicle entry into the resting phase.

What dosage of black seed oil is used in hair loss studies?

Clinical studies on black seed oil for hair loss have used doses ranging from 100 mg to 500 mg of Nigella sativa extract daily, as well as topical formulations applied directly to the scalp. Research across 25 studies with 696 participants shows positive signals at these ranges. No universal standard dosage has been established, and formulation quality varies significantly between products.

Can black seed oil help with alopecia areata?

Research suggests black seed oil may support hair regrowth in alopecia areata, with 25 studies across 696 participants earning a Grade A (Strong) rating on HairCited. Its anti-inflammatory and immunomodulatory properties via thymoquinone may help calm the autoimmune response that targets hair follicles in this condition. Most studies used topical application directly to bald patches.

Black Seed Oil

botanical_oil

Also known as: Nigella sativa oil, Black cumin seed oil, Kalonji oil

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About

Black seed oil (Nigella sativa) contains thymoquinone, an active compound with anti-inflammatory and antihistamine properties. It may help modulate triggers of telogen effluvium and support scalp health, though clinical evidence for hair regrowth is preliminary.

How It Works

Thymoquinone has anti-inflammatory and antihistamine effects; may modulate telogen effluvium triggers.

Evidence For Conditions

Condition	Grade	Studies	Participants
Telogen Effluvium	A	25	1327	View →
Alopecia Areata	A	25	1327	View →

Side Effects

Contact dermatitis when applied topically
Gastrointestinal discomfort
May lower blood sugar levels
Possible allergic reactions

Drug & Supplement Interactions

Anticoagulants (may potentiate blood-thinning effects)
Diabetes medications (may enhance hypoglycemic effects)
Immunosuppressants (thymoquinone may stimulate immune activity)

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Pumpkin Seed Oil

Quick Facts

Dosage: Hair_Loss: 1-2 tsp/day or topical application
Forms: capsule liquid topical
Natural Sources: Nigella sativa seeds
Upper Limit: Not established
Best Time: Oral: with meals; Topical: massage into scalp and leave for 30 minutes before washing

Evidence Summary

Telogen Effluvium A

Alopecia Areata A

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.