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Moumoujus

C12-13 PARETH-2 PHOSPHATE.

Valuable / CLEANSING, SURFACTANT - CLEANSING

An anionic surfactant and emulsifier that excels at stabilizing oil-water interfaces in cleansing and suncare formulations. Its phosphate ester structure allows it to function as both a gentle cleansing agent and an SPF-boosting film former that enhances UV filter distribution on skin.

Summary

Surfactant Emulsifier Film former SPF booster

Science

Mechanism of Action

Reduces interfacial tension between oil and water phases to create stable emulsions, while forming protective films that improve the even distribution of active ingredients across the skin surface

Research

Clinical Evidence

Medium confidence
Effective range 0.5–3%
Optimal

1.5%

Key findings

  1. 01 Enhanced SPF performance and water resistance in sunscreen formulations through improved UV filter film formation

Transparency

Dusting Analysis

Not commonly dusted

Functional surfactant typically used at effective concentrations rather than trace amounts

The Formula

Formulation

Solubility
Both
Optimal pH 5 – 9.5
0 7 14

Stability

Maintains stability in neutral to slightly alkaline conditions but susceptible to hydrolysis below pH 4.0; converts from oil-dispersible to water-dispersible upon neutralization

Synergies

  • UV filters (enhances distribution)
  • Other anionic surfactants

Conflicts

  • Cationic surfactants
  • Highly acidic formulations

Safety

Safety Profile

CIR Status
Safe as used
Max tested
8.3%
Pregnancy
Safe
Sensitization risk Low

CIR Expert Panel determined alkyl phosphates safe when formulated to minimize irritation potential

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A versatile multifunctional ingredient that enhances both cleansing efficacy and sunscreen performance with minimal irritation risk.

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