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Moumoujus

C12-13 PARETH-5.

Valuable CAS 66455-14-9 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A versatile non-ionic surfactant and emulsifier that creates stable oil-water mixtures while gently cleansing skin of dirt and excess sebum. This synthetic ingredient combines moderate chain-length fatty alcohols (C12-13) with ethylene oxide to deliver effective cleansing without significant irritation. Its dual-phase compatibility makes it valuable in both rinse-off cleansers and leave-on formulations.

Summary

surfactant emulsifying cleansing

Science

Mechanism of Action

Functions through amphiphilic molecular structure where the lipophilic C12-13 carbon chain binds to oils and sebum while the hydrophilic polyethylene glycol head interacts with water, reducing interfacial tension to facilitate oil removal and create stable emulsions

Research

Clinical Evidence

High confidence
Effective range 0.5–10%
Optimal

3%

Key findings

  1. 01 Clinical evaluation in 6,202 patients demonstrated low sensitization rates with only 1.77% weakly positive and 0.34% strongly positive allergic reactions

Transparency

Dusting Analysis

Not commonly dusted

As a functional surfactant and emulsifier, this ingredient serves essential formulation purposes rather than acting as filler material

The Formula

Formulation

Solubility
Both
Optimal pH 4 – 9
0 7 14

Stability

Maintains stability across normal cosmetic pH ranges and demonstrates compatibility with anionic, cationic, and other non-ionic surfactants due to its non-ionic nature

Synergies

  • other non-ionic surfactants
  • anionic surfactants
  • cationic surfactants

Conflicts

  • strong oxidizing agents
  • strong acids

Safety

Safety Profile

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

Approved for use when properly formulated to minimize irritation; manufacturers must monitor for trace 1,4-dioxane from ethoxylation process

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A well-tolerated, versatile surfactant suitable for multiple skin types with established safety data and broad formulation compatibility.

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