Science
Mechanism of Action
This ingredient operates through a dual mechanism. The dimethicone component creates a thin, hydrophobic film on the skin's surface, acting as a temporary physical barrier against environmental elements and significantly reducing transepidermal water loss. This layer also optically refines skin texture by filling in fine lines and pores, providing a smooth, silky feel without significant skin penetration. Concurrently, the undecanoic acid component interferes with fungal cell membranes and modulates the skin's pH, thereby inhibiting fungal proliferation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Dimethicone exhibits high stability to heat and resistance to most chemical substances, though it is susceptible to degradation by strong acids.
Conflicts
- strong acids
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed both dimethicone and undecanoic acid safe for cosmetic use when properly formulated to be non-irritating and non-sensitizing. Dimethicone is FDA-approved as an active ingredient in over-the-counter skin protectant drug products at concentrations ranging from 1% to 30%. Insufficient data exists for products potentially inhaled when applied via airbrush. Environmental concerns for dimethicone include its persistence and bioaccumulation potential.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Undecanoic Acid Dimethicones presents a valuable dual-action profile, offering significant occlusive and skin-smoothing benefits alongside targeted antifungal properties, making it well-suited for a diverse range of skincare and cosmetic formulations.
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References
Sources