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STEAROYL ETHYLTRIMONIUM METHOSULFATE.

Valuable CAS - / SURFACTANT - EMULSIFYING

STEAROYL ETHYLTRIMONIUM METHOSULFATE is a multifunctional ingredient primarily functioning as an emulsifier, ensuring consistent product texture by blending oil and water phases. It also offers conditioning benefits, imparting a subtle, non-greasy moisturizing feel to the skin while stabilizing formulations and reducing static charges.

Emulsifying Antistatic Hair Conditioning Skin Conditioning Product Stabilizer

Science

This ingredient operates as a cationic quaternary ammonium compound. Its primary mechanism involves emulsification, stabilizing formulations by effectively binding oil and water components to create a uniform product. On the skin, it provides a light conditioning effect, offering hydration without leaving a heavy residue, and concurrently aids in dissipating static charges.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

The ingredient supports product stability even within complex cosmetic formulations.

Conflicts

  • As a cationic quaternary ammonium compound, it may exhibit incompatibility with strong anionic ingredients, potentially leading to precipitation or a reduction in functional performance.

Safety

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed trimoniums, including Stearoyl Ethyltrimonium Methosulfate, concluding their safety in current usage concentrations when formulated to be non-irritating. No specific SCCS opinions were identified. This ingredient is listed within the FDA Global Substance Registration System (UNII: WRL6E4QEWW).


Your Skin

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

Our Assessment

Valuable

A valuable ingredient, contributing significantly to formulation stability and providing gentle conditioning benefits across various skin types, including sensitive skin.


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