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C11-13 PARETH-10.

Valuable CAS - / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

C11-13 Pareth-10 is a gentle non-ionic surfactant that creates stable emulsions between oil and water phases in skincare formulations. This versatile ingredient effectively cleanses by forming micelles that capture impurities while maintaining low irritation potential across all skin types.

surfactant/cleansing emulsifying

Science

Functions as a surfactant by reducing interfacial tension between oil and water molecules, enabling stable emulsion formation. During cleansing, it creates micelles that encapsulate lipophilic debris, excess sebum, and impurities for easy removal without disrupting the skin barrier.


Research

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Retrospective analysis of 3,186 patients showed 0.97% weakly positive and 0.25% strongly positive contact reactions to chemically similar laureth-9
  2. 02 Expanded study of 6,202 patients demonstrated 1.77% weakly positive and 0.34% strongly positive reactions, confirming low sensitization potential

Transparency

Not commonly dusted

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


The Formula

Solubility
Water
Optimal pH 3 – 11
0 7 14

Stability

Demonstrates exceptional stability due to non-ionic structure and robust ether linkages, maintaining performance across wide pH ranges and in presence of electrolytes

Conflicts

  • Strong oxidizing agents
  • Highly anionic polymers in specific ratios

Safety

CIR Status
Safe as used
Sensitization risk Low

CIR Expert Panel confirms safety when formulated to be non-irritating; avoid formulations where N-nitroso compounds may form to prevent nitrosamine contamination


Your Skin

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

Our Assessment

Valuable

A reliable, gentle surfactant suitable for all skin types with proven safety profile and excellent formulation stability.


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