Science
Mechanism of Action
As a non-ionic surfactant with a high Hydrophilic-Lipophilic Balance (HLB) value, it reduces interfacial tension to create stable oil-in-water emulsions. It also functions as a precision solubilizer, allowing hydrophobic active ingredients to be seamlessly integrated into water-based delivery systems.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Clinical assessments by the CIR Expert Panel (2012) indicate that while high concentrations (above 5%) can be dose-dependent irritants, standard cosmetic concentrations are non-sensitizing.
- 02 A large-scale retrospective study of related alkyl PEG ethers involving over 3,000 patients demonstrated an exceptionally low sensitization rate of approximately 0.97%.
Transparency
Dusting Analysis
Because Ceteth-45 is a functional emulsifier rather than a primary active, it is rarely 'dusted' for marketing claims; however, concentrations below 0.5% may be insufficient to provide meaningful structural stability in complex emulsions.
The Formula
Formulation
Stability
Highly stable in standard storage conditions; however, the molecular structure is prone to hydrolysis in highly alkaline environments exceeding pH 9.0.
Synergies
- Hydrophobic actives
- Oil-in-water (O/W) emulsions
- Botanical extracts
Conflicts
- Strong oxidizing agents
- Highly alkaline environments (pH > 9)
- Excessive concentrations of anionic surfactants
Safety
Safety Profile
Quality control is essential to ensure 1,4-dioxane levels remain below 1 ppm through vacuum stripping, as per FDA safety recommendations for ethoxylated ingredients.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A reliable and safe formulation pillar that ensures the structural integrity and delivery efficiency of high-performance skincare.
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References
Sources