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Moumoujus

AMMONIUM NONOXYNOL-30 SULFATE.

Optional CAS 31691-97-1 / CLEANSING

An anionic surfactant and emulsifying agent primarily utilized in rinse-off cleansing formulations for its ability to reduce water surface tension and facilitate oil-water mixing. The high ethoxylation number (30 units) creates a bulky molecular structure that limits skin penetration while maintaining effective cleansing properties. This ingredient serves as a functional backbone in hair care and facial cleansing products rather than an active treatment component.

Summary

surfactant cleansing foaming emulsifying

Science

Mechanism of Action

Functions by disrupting surface tension between water and lipid-based impurities, enabling the removal of oils, sebum, and debris from skin and hair surfaces through micelle formation and emulsification processes.

Research

Clinical Evidence

Medium confidence
Effective range 2–5%
Optimal

5%

Key findings

  1. 01 Human repeat insult patch testing on related nonoxynols (1-8) demonstrated non-sensitizing properties at ≤5% concentrations, with increased allergic contact dermatitis risk at 10%+ levels
  2. 02 Clinical assessment of similar ethoxylated surfactants showed 2% sensitization rate specifically in dermatitis-predisposed populations

Transparency

Dusting Analysis

Not commonly dusted

As a functional surfactant ingredient rather than an active component, dusting is not applicable to this cleansing agent.

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 8
0 7 14

Stability

Demonstrates high stability in neutral to mildly alkaline aqueous environments, with potential sulfate group hydrolysis under extreme acidic conditions or elevated temperatures.

Conflicts

  • Cationic surfactants
  • Strongly acidic environments (pH < 3.0)
  • Polyvalent metal ions

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel established safety for rinse-off applications with leave-on product safety confirmed up to 5% concentration based on irritation potential assessment.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A reliable functional surfactant for rinse-off applications with established safety profile, though not essential given availability of alternative cleansing agents.

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References

Sources