The science
By study count, the deepest of all the domains.
Fourteen randomized controlled trials. 1,159 subjects. A meta-analysis odds ratio of 4.59.
A 2022 systematic review and meta-analysis of 14 RCTs (n=1,159)
Mean age 28.86; 69% female. Analyzed Nigella sativa preparations across skin conditions. Overall odds ratio was 4.59 (95% CI 2.02–10.39) — meaning subjects in the Nigella sativa groups were 4.59× more likely to show skin improvement versus control. Twelve of the fourteen studies showed statistically significant benefit.1
A 2020 randomized, double-blind, placebo-controlled trial (n=60)
This RCT tested a topical hydrogel, not an oral oil — included here to characterize the active-compound research base, not as evidence of habb’s effect. The trial used a 1% Nigella sativa hydrogel standardized to thymoquinone content, applied twice daily for 60 days. The treatment group showed a 78% mean reduction in Investigator’s Global Assessment (IGA) skin severity score versus 3.3% in placebo (p<0.001), with no adverse events reported. The fatty-acid mechanism is shared with our morning ritual, but the delivery is different.2
Internally, habb delivers the linoleic acid (57–61%) and oleic acid (20–21%) that support skin barrier function, plus thymoquinone’s documented antioxidant activity.
Why one ingredient, not twelve
Most skin shelves are a stack. habb is one seed.
What’s in the bottle should match what’s on the label. Most bottles don’t show their work. We do — every batch, third-party tested, the actual numbers for your bottle printed on a card in the box. The 2023 Nutritional Outlook research summary noted that measured oil supports the skin barrier where unmeasured oil sometimes does the opposite. It is not a small detail.
That’s why every habb batch publishes three data points:
Lab-verified. Method-disclosed.
Linoleic 57–61%, oleic 20–21%, palmitic 12–13%. The fatty acids are what feed your skin barrier.
For oxidation and contamination safety.
Sourcing: Ethiopian seeds, cold-pressed in California, one ingredient. The full how-it’s-made math lives on how it’s made.
Cold-pressed in California from single-origin Ethiopian seeds.
How to use
One teaspoon, every morning.
The ceramic spoon ships with every bottle. Take it straight, stir into warm water, or add to a morning smoothie. Some customers also use a small amount topically on clean skin at night; the oil absorbs fully and leaves no film. Patch-test first.
What real customers are saying
Questions