Science
Mechanism of Action
This compound operates through multiple pathways. As a surfactant, it reduces surface tension, aiding in cleansing and emulsification. Its efficacy as a preservative is rooted in its parent compound, undecylenic acid, which exhibits antifungal and antimicrobial properties by inhibiting fungal morphogenesis, disrupting microbial cell membranes, and preventing the conversion of Candida albicans to its more invasive hyphal form.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Undecylenate salts are generally water-soluble, though a specific optimal pH range for TEA-Undecylenate stability is not defined in the available data.
Conflicts
- Nitrosating agents (due to potential nitrosamine formation with the Triethanolamine component)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Undecylenic Acid and its salts, including TEA-Undecylenate, are safe for use in cosmetics subject to concentration or use limitations. The EU Cosmetics Directive (Annex VI) restricts its use as a preservative to a maximum concentration of 0.2% (as the acid). A critical safety consideration is the Triethanolamine (TEA) component, which has the potential to form nitrosamines if formulated with nitrosating agents. EWG notes high use restrictions for this ingredient.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While effective as a preservative and cleansing agent within regulatory limits, the potential for nitrosamine formation with certain ingredients and its medium irritancy rating necessitate careful consideration in precision skincare formulations.
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References
Sources