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CETOLETH-11.

Valuable CAS 68155-01-1 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

Cetoleth-11 is a high-performance, non-ionic emulsifier and surfactant derived from a blend of cetyl and oleyl alcohols. It plays a critical role in stabilizing oil-in-water emulsions, ensuring that complex skincare formulations maintain a silky, uniform texture without separation.

Surfactant Emulsifying agent Cleansing agent Solubilizer

Science

As an amphiphilic molecule with an HLB value of approximately 13.1, Cetoleth-11 functions by reducing interfacial tension between the oil and water phases. Its ethoxylated chain provides water solubility, while the alkyl chain anchors into the oil phase, allowing it to stabilize micelles and efficiently lift surface impurities during the cleansing process.


Research

High confidence
Effective range 1–25%
Optimal

10%

Key findings

  1. 01 Safety assessment data on the Alkyl PEG Ethers family confirms that leave-on concentrations up to 10% are non-irritating and dermatologically safe.
  2. 02 In rinse-off applications, concentrations as high as 25% have been clinically evaluated and shown to exhibit minimal risk of sensitization.

Transparency

Not commonly dusted
Min. effective
1%
Red flag below
0.1%

As a functional texturizer and emulsifier rather than an active, 'dusting' is less common; however, concentrations below 0.5% may indicate it is used only as a secondary solubilizer rather than a primary stabilizing agent.


The Formula

Solubility
Water
Optimal pH 3 – 11
0 7 14

Stability

Highly resilient due to its ether linkage, making it resistant to hydrolysis across a broad pH spectrum. It maintains structural integrity in the presence of electrolytes and hard water.

Synergies

  • Lipophilic surfactants
  • Humectants
  • Mineral oils

Conflicts

  • Strong oxidizing agents
  • Phenolic compounds

Safety

CIR Status
Safe as used
Max tested
10%
Pregnancy
Safe
Sensitization risk Low

To ensure purity, Moumoujus standards require suppliers to utilize vacuum stripping to maintain 1,4-dioxane levels below 10 ppm, mitigating potential by-product risks.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

A versatile and stable emulsifier essential for creating elegant, non-irritating textures in both leave-on and rinse-off precision formulas.


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