Science
Mechanism of Action
This ingredient operates by reducing the surface tension between oil and water, thereby stabilizing emulsions and preventing phase separation. As a cleansing agent, it aids water in interacting with and rinsing away oily residues and impurities, while also acting as a hydrotrope to improve the solubility of other compounds.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Octoxynol-1 exhibits solubility in polar organic solvents but is insoluble in water, indicating its suitability for oil-based or emulsified systems.
Conflicts
- Should not be incorporated into products intended for the eye area due to significant ocular irritancy concerns.
- Formulations require meticulous purification processes to mitigate trace levels of 1,4-dioxane impurities, a potential byproduct of its ethoxylation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Octoxynol-1 safe in rinse-off products and in leave-on formulations at concentrations not exceeding 5%. This restriction addresses concerns regarding potential skin sensitization and the enhanced absorption of shorter-chain octoxynols. Concerns persist regarding trace amounts of 1,4-dioxane, necessitating stringent purification steps. Furthermore, this ingredient is classified as a suspected endocrine disruptor and is expressly not recommended for use in the eye area due to documented ocular irritancy.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Given the high irritancy, observed sensitization risk (2 out of 50 subjects), classification as a suspected endocrine disruptor, and concerns regarding 1,4-dioxane impurities, Octoxynol-1 is not suitable for precision skincare formulations and should be avoided.
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References
Sources