Science
Mechanism of Action
Ceteareth-12 functions as a molecular bridge with an HLB value of 13.5. Its structure consists of a hydrophilic ethoxylated chain and a lipophilic cetearyl group; by orienting itself at the oil-water interface, it reduces interfacial tension to prevent phase separation and maintain emulsion integrity.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Demonstrated efficacy in thermal water-based creams for improving skin hydration in patients with inflammatory conditions like psoriasis and eczema.
- 02 Clinical 21-day patch testing confirmed the ingredient provides a low-irritation vehicle with no evidence of contact sensitization.
Transparency
Dusting Analysis
As a functional emulsifier rather than a bio-active, Ceteareth-12 is rarely 'dusted.' It is typically included at concentrations above 1% to ensure the structural stability of the product.
The Formula
Formulation
Stability
The ingredient is stable in acidic to neutral environments but susceptible to hydrolysis in highly alkaline conditions (pH > 8). It requires heating to approximately 40°C for proper aqueous phase integration.
Synergies
- Ceteareth-20
- Cetearyl Alcohol
- Thermal Water
Conflicts
- Strong oxidizing agents
- Highly alkaline environments
- High concentrations of anionic surfactants
Safety
Safety Profile
While safe for general use, the CIR Expert Panel advises against applying ethoxylated ingredients to severely damaged or broken skin due to potential PEG-related nephrotoxicity risks observed in clinical burn settings.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential and low-irritancy structural component that ensures the stability and elegant skin-feel of precision O/W emulsions.
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References
Sources