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LAURETH-4 CARBOXYLIC ACID.

Valuable CAS 27306-90-7 / SURFACTANT - CLEANSING

LAURETH-4 CARBOXYLIC ACID is a synthetic organic acid surfactant primarily utilized for its cleansing and foaming properties. It efficiently reduces surface tension, enabling the effective removal of oils and impurities from the skin.

Summary

surfactant/cleansing foaming

Science

Mechanism of Action

This ingredient functions by acting as a surfactant, which means it lowers the surface tension between liquids, solids, and gases. In skincare, this allows immiscible substances like oil and water to mix, facilitating the emulsification and removal of fat and soil particles from the skin's surface, resulting in a thorough cleanse.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

As an organic acid surfactant, Laureth-4 Carboxylic Acid offers notable formulation flexibility. While specific optimal pH ranges are not detailed, related carboxylic acid surfactants are known for excellent alkali stability and compatibility with cationic ingredients. Its precursor, Laureth-4, also demonstrates resistance to acids, hard water, and partial resistance to alkalis.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has not specifically reviewed Laureth-4 Carboxylic Acid. However, related ingredients, Laureth-4 and Laureth-23, were deemed safe for cosmetic use when formulated to be non-irritating. A primary safety concern stems from the ethoxylation process used in its production, which can generate 1,4-dioxane, a known animal carcinogen. This byproduct can be effectively controlled and minimized through stringent purification steps during manufacturing. EWG Skin Deep rates Laureth-4 Carboxylic Acid with low concerns across categories including cancer, allergies, immunotoxicity, and developmental/reproductive toxicity.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Laureth-4 Carboxylic Acid is a valuable cleansing and foaming agent for formulations targeting normal and sensitive skin, provided robust purification processes are employed to control potential 1,4-dioxane contamination.

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