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SODIUM C12-13 PARETH SULFATE.

Valuable / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

An anionic surfactant, SODIUM C12-13 PARETH SULFATE effectively cleanses skin and hair by emulsifying oils and dirt, enabling their easy removal with water. It also functions as a foaming agent, contributing to the sensory experience of cleansers.

Summary

Cleansing agent Foaming agent Emulsifier

Science

Mechanism of Action

This anionic surfactant operates by reducing the surface tension of liquids, facilitating the mixing of immiscible substances like oil and water. This allows it to efficiently bind with and lift away oils and dirt from the skin and hair, making them readily washable.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 2010 that this ingredient, alongside related sulfated ethoxylated alcohols, is safe for use in cosmetics and personal care products at current concentrations, provided formulations are non-irritating.

Transparency

Dusting Analysis

Not commonly dusted

As a fundamental anionic surfactant, SODIUM C12-13 PARETH SULFATE serves a core functional purpose in cleansing formulations rather than being positioned as a 'hero' active ingredient or subjected to dusting.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

This ingredient exhibits stability in alkaline, weak acid, and hard water environments, but is unstable in strong acids. Its solubility and cleansing efficacy are influenced by the number of ethylene oxide (EO) units, with increased EO units leading to higher solubility but reduced cleansing power. It can also contribute to product thickening and viscosity.

Conflicts

  • strong acids

Safety

Safety Profile

CIR Status
Safe with restrictions
Pregnancy
Caution
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel deemed this ingredient safe for cosmetic use under current practices, provided it is formulated to be non-irritating. While the U.S. FDA indicates 1,4-dioxane by-product levels in cosmetics are not hazardous, some sources have broadly linked this ingredient to potential 'toxic, cancerogenic, and causing allergic reactions,' and 'not recommended for pregnant women,' citing concerns related to carcinogenic and reproductive toxicity, though these claims often lack specific substantiation for this ingredient. For children's cleaning products, a concentration not exceeding 10% is suggested to minimize irritation.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

SODIUM C12-13 PARETH SULFATE is a highly effective anionic surfactant for cleansing and foaming, widely recognized as safe for cosmetic use when precisely formulated to be non-irritating.

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