Science
Mechanism of Action
By reducing the interfacial tension between disparate phases, Ceteareth-34 organizes itself at the oil-water interface. Its 34-unit polyoxyethylene chain provides robust steric stabilization to prevent droplet coalescence, while its fatty alcohol tail anchors into the oil phase, ensuring long-term formula homogeneity.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 Clinical patch testing of structural analogs at 1.35% demonstrated zero sensitization and minimal irritation over 21-day cycles.
- 02 Safety assessments published in the International Journal of Toxicology confirm non-toxic effects in dermal applications up to concentrations of 10%.
Transparency
Dusting Analysis
As a functional emulsifier rather than a bioactive, 'dusting' is rare; however, levels below 0.5% may indicate it is used as a secondary stabilizer rather than the primary emulsifying system.
The Formula
Formulation
Stability
Exhibits excellent stability across a broad pH spectrum, though prolonged exposure to extremely alkaline environments or high oxidative stress may trigger hydrolysis.
Synergies
- Cetearyl Alcohol
- Glyceryl Stearate
Conflicts
- Strong oxidizing agents
- Highly anionic polymers
Safety
Safety Profile
While safe for general topical use, the CIR Expert Panel advises against application on severely damaged or broken skin due to potential systemic absorption risks associated with large-chain PEG derivatives in compromised barrier conditions.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable, low-irritancy emulsifier essential for creating stable, cosmetically elegant O/W emulsions across a wide range of skin types.
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References
Sources