Science
Mechanism of Action
It functions as a surface-active agent (surfactant) that reduces the interfacial tension between disparate oil and water molecules. By positioning itself at the oil-water interface, it creates a stable structure that prevents phase separation and acts as a wetting agent to improve the uniform distribution of the product across the skin's surface.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 Demonstrated no sensitization and only minimal irritation in repeat-insult patch testing (HRIPT) conducted over 21 days.
- 02 Confirmed as minimally irritating following single dermal exposure in clinical safety reviews.
Transparency
Dusting Analysis
As a functional emulsifier rather than an active ingredient, it is rarely 'dusted.' However, using it below 1% may indicate it is being used solely as a wetting agent rather than a primary emulsifying system.
The Formula
Formulation
Stability
Possesses excellent thermal and electrolyte stability due to its non-ionic nature; typically processed at approximately 75°C. It maintains an HLB value of 12.9-13.2.
Synergies
- Lipophilic co-emulsifiers
- Electrolytes
- Mineral UV filters
Conflicts
- Strong oxidizing agents
- Extremely acidic environments (pH < 3.0)
Safety
Safety Profile
Contraindicated for use on severely damaged or broken skin (e.g., second-degree burns) to prevent potential systemic absorption of PEG compounds. Formulations must ensure 1,4-dioxane levels are strictly controlled.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable and stable emulsifying agent that ensures formula integrity and superior skin-feel, though it should be monitored in products for acne-prone skin.
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References
Sources