Science
Mechanism of Action
As an amphiphilic molecule, Ceteth-7 bridges the gap between aqueous and lipid phases by lowering interfacial tension. Its structure—comprised of a lipophilic cetyl tail and a hydrophilic PEG chain—allows it to encapsulate oil-based impurities for easy rinsing and to organize formula ingredients into a cohesive, stable matrix that prevents phase separation.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Human Repeat Insult Patch Testing (HRIPT) confirmed the ingredient is non-sensitizing and non-irritating, validating its compatibility with the skin barrier.
- 02 Comprehensive assessments indicate zero significant evidence of phototoxicity, supporting its use in daytime formulations such as sunscreens.
Transparency
Dusting Analysis
As a functional emulsifier rather than a bio-active, Ceteth-7 is typically used at functional levels (0.5%+) to maintain formula integrity. Inclusion below 0.1% would be insufficient for emulsification, suggesting its presence only for label claims.
The Formula
Formulation
Stability
Exhibits exceptional chemical stability across a wide pH spectrum due to its robust ether linkages, resisting degradation in both acidic and alkaline environments.
Conflicts
- Strong oxidizing agents
Safety
Safety Profile
To ensure purity, manufacturers must utilize vacuum stripping to maintain residual ethylene oxide and 1,4-dioxane at levels below 1 ppm.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable and highly stable emulsifier that ensures product consistency and gentle cleansing without compromising the skin's sensitivity.
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References
Sources