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Moumoujus

C10-16 PARETH-1.

Valuable CAS - / CLEANSING, SKIN CONDITIONING - EMOLLIENT, SURFACTANT - CLEANSING

A non-ionic surfactant that combines C10-16 alkyl chains with a single ethylene oxide unit to create an effective cleansing and emulsifying agent. This ingredient reduces surface tension between oil and water phases, making it particularly useful for removing impurities while maintaining formulation stability. Its low HLB value of approximately 3.5-4.5 makes it primarily oil-soluble while remaining water-dispersible.

Summary

surfactant emulsifier cleansing agent emollient

Science

Mechanism of Action

The hydrophobic C10-16 alkyl chain binds to oils and sebaceous debris on the skin surface, while the single ethylene oxide unit provides polar functionality that interfaces with water. This dual-phase interaction reduces surface tension, allowing for effective removal of impurities and stabilization of oil-water emulsions in cosmetic formulations.

Research

Clinical Evidence

High confidence
Effective range 10–22%
Optimal

15%

Key findings

  1. 01 Human Repeated Insult Patch Tests on related alkyl PEG ethers demonstrated no sensitization or significant irritation

Transparency

Dusting Analysis

Not commonly dusted

As a functional surfactant and emulsifier, this ingredient is used at appropriate concentrations for its technical purpose rather than for marketing appeal.

The Formula

Formulation

Solubility
Oil
Optimal pH 3 – 11
0 7 14

Stability

Exhibits excellent stability across broad pH range due to non-ionic nature. Maintains functionality at room temperature but should be protected from extreme heat exposure.

Synergies

  • other non-ionic surfactants
  • emollients
  • cleansing agents

Conflicts

  • strong oxidizing agents
  • strong acids
  • strong bases

Safety

Safety Profile

CIR Status
Safe as used
Max tested
22%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel approves use when formulated to minimize irritation. Requires monitoring of 1,4-dioxane and ethylene oxide impurities below 1 ppm threshold.

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 all skin types with strong safety profile and broad formulation compatibility.

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References

Sources