Science
Mechanism of Action
Methyl Undecylenate primarily exerts its anti-odor effect through antimicrobial action, preventing bacterial proliferation on the skin. As a derivative of undecylenic acid, it contributes to anti-fungal activity by disrupting fungal cell membranes and inhibiting fungal morphogenesis, specifically preventing the transition of Candida albicans from its yeast form to its more invasive hyphal state.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
There is no indication that Methyl Undecylenate is commonly 'dusted' or overhyped in cosmetic formulations; its documented uses align with its known mechanisms.
The Formula
Formulation
Stability
Methyl Undecylenate exhibits favorable stability and low volatility due to its hydrophobic nature, neutral pH, and high purity, typically around 98%. For optimal stability and a shelf life of up to 24 months, it should be stored in tightly sealed containers in a cool (preferably 0–8 °C), dry, well-ventilated area, protected from heat and light. It can also be stabilized with MEHQ.
Conflicts
- strong oxidizing agents
Safety
Safety Profile
Methyl Undecylenate is generally considered safe for use in cosmetics and personal care products by the FDA and EWG, though its use as a flavoring agent by the FDA has ceased. In concentrated forms, it is classified as an irritant, with potential harm if swallowed or inhaled, and can cause irritation to eyes and the respiratory system. It may also cause sensitization through inhalation and skin contact; however, a 12% solution showed no irritation or sensitization in human experience. The ingredient is also noted as moderately hazardous and very toxic to aquatic life with long-lasting effects.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Methyl Undecylenate is a valuable ingredient, prized for its antimicrobial and anti-odor properties, and its fundamental role as a precursor to effective anti-fungal derivatives in skincare formulations.
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