Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

C11-15 PARETH-9.

Valuable CAS 173244-48-9 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

A gentle non-ionic surfactant and emulsifier derived from alcohol ethoxylates, commonly used to create stable oil-in-water formulations. This versatile ingredient excels at reducing surface tension between water and oil phases while maintaining excellent skin tolerance across all skin types.

Summary

emulsifying surfactant cleansing

Science

Mechanism of Action

Functions as an amphiphilic molecule with hydrophobic alcohol chains (C11-15) and hydrophilic polyethylene glycol segments, enabling it to stabilize emulsions by positioning at oil-water interfaces and facilitating gentle cleansing through micelle formation.

Research

Clinical Evidence

High confidence
Effective range 3–15%
Optimal

5%

Key findings

  1. 01 Guinea pig sensitization studies at 15% concentration demonstrated no allergic potential
  2. 02 Patch testing with structural analogs at 25% showed only negligible irritation under occlusive conditions
  3. 03 Large-scale clinical assessment of 6,202 patients revealed exceptionally low sensitization rate of 0.34%

Transparency

Dusting Analysis

Not commonly dusted

As a functional emulsifier and surfactant, this ingredient serves essential formulation purposes rather than marketing appeal, making dusting uncommon.

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 12
0 7 14

Stability

Demonstrates exceptional stability across broad pH range due to ether linkage resistance to hydrolysis. Maintains emulsifying performance in presence of electrolytes.

Conflicts

  • Strong oxidizing agents

Safety

Safety Profile

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

CIR Expert Panel approval with recommendation for non-irritating formulation practices. Higher concentrations permissible in rinse-off applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A well-tolerated, versatile emulsifier with strong safety profile and broad formulation compatibility, earning its place as a reliable functional ingredient.

Related

Similar Ingredients

Finding similar ingredients…

References

Sources