Science
Mechanism of Action
Beheneth-15 acts as a molecular bridge between water and oil phases. Its 22-carbon behenyl chain serves as a robust hydrophobic anchor, while the 15 units of ethylene oxide provide hydrophilic balance, effectively reducing interfacial tension to create stable, uniform emulsions and enhancing the spreadability of topical applications.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Safety assessment by the Cosmetic Ingredient Review (CIR) confirmed that concentrations between 0.5% and 2.0% are non-sensitizing and non-irritating.
- 02 Technical evaluations in cleansing compositions demonstrate that usage up to 5.0% improves formula viscosity and stability without inducing skin irritation or affecting clarity.
Transparency
Dusting Analysis
As a functional emulsifier rather than an active, 'dusting' is less common; however, concentrations below 0.5% may indicate it is being used merely as a co-emulsifier rather than a primary stabilizing agent.
The Formula
Formulation
Stability
Exhibits exceptional stability across a broad pH spectrum due to its non-ionic nature. Requires hot-process manufacturing (60-75°C) for proper integration.
Synergies
- Other Alkyl PEG Ethers
- Fatty Alcohols
Conflicts
- High electrolyte concentrations
- Strong oxidizing agents
Safety
Safety Profile
The CIR Expert Panel highlights that dermal penetration for this long-chain molecule is extremely low, making it a safe choice for leave-on products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A highly reliable, non-irritating structural ingredient essential for creating elegant, stable, and skin-friendly emulsions.
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References
Sources