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CETETH-40.

Valuable / CLEANSING, SURFACTANT - CLEANSING

A high-performance non-ionic surfactant and emulsifier specifically utilized to create stable, transparent aqueous systems. It serves as a structural bridge between water and oil phases while simultaneously acting as a sophisticated delivery vehicle for bioactive compounds.

Surfactant Emulsifying Agent Solubilizer Penetration Enhancer

Science

As a high HLB (Hydrophilic-Lipophilic Balance) molecule, Ceteth-40 reduces interfacial tension to stabilize complex formulations. It functions as a penetration enhancer by temporarily reorganizing the lipid architecture of the stratum corneum, allowing larger or more polar active molecules to bypass the skin's natural barrier more efficiently.


Research

Medium confidence
Effective range 0.2–10%
Optimal

5%

Key findings

  1. 01 Skin permeation modeling indicates significant enhancement of active ingredient delivery at 5% concentrations over a 48-hour period.
  2. 02 Clinical evaluations at 0.2% confirm the ingredient's integrity as a non-irritating stabilizer in multi-phase gel systems.

Transparency

Not commonly dusted
Min. effective
0.2%
Red flag below
0.1%

Because Ceteth-40 is effective as a stabilizer even at 0.2%, it is rarely 'dusted' for marketing purposes. Its presence usually indicates a functional necessity for the formulation's texture or delivery mechanism.


The Formula

Solubility
Water
Optimal pH 3 – 11
0 7 14

Stability

Highly resilient to electrolyte fluctuations and thermal stress; maintains an HLB value between 17 and 20. Exhibits excellent stability in non-ionic environments.

Synergies

  • Active bio-actives requiring enhanced delivery
  • Electrolyte-rich serums

Conflicts

  • High concentrations of anionic surfactants
  • Strong oxidizing agents

Safety

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

Ensuring high purity is critical; Moumoujus standards require minimal residual 1,4-dioxane (typically below 1 ppm) through advanced purification techniques like vacuum stripping.


Your Skin

Yes Normal
No Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

An essential formulation tool for creating elegant, high-clarity products that require deep penetration of active ingredients.


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References