Science
Mechanism of Action
The extract functions through several biological pathways: it inhibits COX-2 protein expression and PGE2 synthesis to reduce cellular inflammation, while its glucosinolate content (specifically sinigrin) converts into isothiocyanates to provide natural antimicrobial effects. Additionally, it stimulates microcirculation and promotes enzymatic exfoliation by loosening desmosomes, which accelerates cell turnover and improves overall radiance.
Research
Clinical Evidence
Medium confidence1%
Key findings
- 01 Demonstrated inhibition of TNF-α release in primary human PBMC at concentrations ≥0.111%.
- 02 Significant reduction in COX-2 expression and PGE2 synthesis observed at concentrations as low as 0.012%.
- 03 Manufacturer guidelines suggest a 5-10% inclusion rate of a 20% aqueous-glycerin extract for optimal purifying and anti-blemish performance.
Transparency
Dusting Analysis
While it shows cellular activity at very low levels (0.012%), topical efficacy for purifying and exfoliating benefits typically requires concentrations above 0.1%. Many 'natural' labels include it at negligible levels (<0.01%) for marketing claims rather than functional impact.
The Formula
Formulation
Stability
Contains volatile isothiocyanates; should be stored in cool, dark environments to maintain potency.
Synergies
- Vitamin C
- Glycerin
- Zinc
Conflicts
- Soap-based surfactants
- Strong antibacterial cleansing agents
Safety
Safety Profile
The presence of allyl isothiocyanate (AITC) can activate TRPA1 receptors, potentially causing mild irritation or a warming sensation. Topical application of undiluted extract is associated with skin/mucosal burns; use only in diluted cosmetic preparations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A highly effective botanical for oily and blemish-prone skin types that requires precise formulation to balance its potent bioactivity with its potential for irritation.
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References
Sources