Science
Mechanism of Action
Erucic acid functions as an emollient, creating a resilient, uniform film on the skin's surface. This barrier effectively minimizes transepidermal water loss (TEWL) and shields against environmental stressors. Its capacity to polymerize through auto-oxidation also contributes to its film-forming properties, leading to enhanced skin conditioning, improved texture, and optimized product spreadability.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As a white waxy solid with a melting point of 33.8 °C (92.8 °F), erucic acid is solid at typical room temperature. This intrinsic characteristic necessitates consideration during formulation, as it will directly influence the viscosity and textural properties of liquid oil-based cosmetic products.
Safety
Safety Profile
The CIR Expert Panel has deemed erucic acid and its salts safe for cosmetic use, provided formulations are designed to be non-irritating and non-sensitizing. While a specific, dedicated CIR report detailing cosmetic concentration limits for erucic acid is absent, food regulations offer context: low-erucic acid rapeseed (canola) oil, regulated to less than 2% erucic acid, is GRAS. Conversely, expressed mustard oil, containing 20-40% erucic acid, is restricted for food use due to historical ingestion risks. Current dietary guidelines (EFSA) suggest a tolerable daily intake of 7 mg/kg body weight, indicating a lower toxicity than once believed for reasonable intake levels. This implies topical application, typically involving lower systemic exposure, is likely well within safety parameters when formulated appropriately.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Erucic acid is a valuable emollient and skin conditioner, forming a protective barrier that reduces transepidermal water loss and improves skin texture.
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References
Sources