Science
Mechanism of Action
This ingredient utilizes an amphiphilic structure, featuring a lipophilic carbon chain and a hydrophilic PEG head. It works by aligning itself at the oil-water interface, effectively bridging the two phases to create stable emulsions or helping to lift debris from the skin's surface during cleansing.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Human Repeat Insult Patch Tests (HRIPT) demonstrate that concentrations between 5-15% remain non-sensitizing to human skin.
- 02 Dermal irritation studies on rabbits confirmed that concentrations up to 1.0% are non-irritating, highlighting its suitability for standard topical applications.
Transparency
Dusting Analysis
Because it functions as a functional excipient rather than a primary active, it is typically used at very low levels (under 3%) to achieve emulsion stability; however, usage below 0.02% may indicate it is being used merely for label claims.
The Formula
Formulation
Stability
Highly stable across acidic and neutral environments. As a non-ionic agent, it maintains excellent compatibility with various surfactant classes (anionic, cationic, and non-ionic).
Synergies
- Anionic surfactants
- Cationic conditioning agents
- Non-ionic emulsifiers
Conflicts
- Strong oxidizing agents
- High electrolyte concentrations (may cause salting out)
Safety
Safety Profile
While safe in consumer products, it is a severe irritant in its undiluted (100%) raw form. The CIR concludes it is safe when the final formulation is designed to be non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable and versatile stabilizer that ensures the structural integrity and smooth texture of both rinse-off and leave-on formulas across all skin types.
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References
Sources