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LAURETH-25.

Valuable CAS 9002-92-0 / CLEANSING, SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

LAURETH-25 is a polyoxyethylene ether of lauryl alcohol, primarily utilized as a functional ingredient in skincare formulations. It acts as an effective surfactant, emulsifier, and solubilizer, critical for creating stable and well-dispersed product textures. Its amphiphilic structure allows it to bridge oil and water phases, essential for homogeneous cosmetic preparations.

Summary

emulsifying surfactant solubilizer

Science

Mechanism of Action

This ingredient functions by significantly lowering the surface tension of liquids, which facilitates the dispersion and mixing of ingredients that would otherwise separate. As a surfactant, it aids in cleansing by allowing oils and dirt to mix with water for easy rinsing. As an emulsifier, its molecular design—featuring both water-attracting (hydrophilic) and oil-attracting (lipophilic) parts—enables the formation of stable emulsions between immiscible liquids like oil and water. Furthermore, it acts as a solubilizer, effectively dispersing lipophilic components into aqueous solutions.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

LAURETH-25 is a foundational formulation ingredient, not an active compound directly providing skin benefits, hence 'dusting' of specific percentages to achieve a dermal outcome is not applicable. Its efficacy lies in its functional properties within the formulation itself.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

LAURETH-25 exhibits good stability across a broad pH range, characteristic of similar ethoxylated compounds, making it versatile for various cosmetic formulations.

Conflicts

  • Must be formulated appropriately to ensure it is non-irritating to the skin.
  • Requires purification to control the potential presence of 1,4-dioxane, a by-product of the ethoxylation process.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

The CIR Expert Panel deems Laureth ingredients, including LAURETH-25, safe for cosmetic use when precisely formulated to be non-irritating. Improper formulation can lead to skin irritation. Extensive studies for developmental, reproductive toxicity, and mutagenicity have yielded negative results. Manufacturers must ensure purification steps are in place to minimize residual 1,4-dioxane.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

LAURETH-25 is a valuable functional ingredient for achieving product stability and aesthetic consistency across diverse cosmetic formulations, provided it is precisely formulated to mitigate potential irritation risks and ensure purity.

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