Science
Mechanism of Action
This ingredient reduces the surface tension between immiscible liquids, such as oil and water, facilitating their dispersion and preventing separation. This action creates stable emulsions, which are fundamental for achieving consistent and desirable cosmetic product characteristics.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
Octyldecyl Phosphate functions as a formulation aid (emulsifier, surfactant) rather than an active ingredient with a specific dosage for skin benefits. Therefore, 'dusting' considerations do not apply.
The Formula
Formulation
Stability
As a phosphate ester, its hydrolysis is generally promoted by alkaline conditions. Some related alkyl phosphates exhibit water solubility in acidic environments.
Conflicts
- Strong reducing agents (risk of highly toxic and flammable phosphine gas formation)
- Oxidizing agents (risk of releasing toxic phosphorus oxides)
- Alkaline conditions (promotes hydrolysis)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Octyldecyl Phosphate, among other alkyl phosphates, safe for use in cosmetics under current practices and concentrations, provided formulations are non-irritating. While animal tests at significantly elevated concentrations showed potential for ocular or skin irritation, these levels are considerably higher than typical cosmetic usage.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Octyldecyl Phosphate is a valuable and safe emulsifying surfactant, critical for creating stable and well-formulated cosmetic products compatible with all skin types.
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References
Sources