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DEA-OLETH-10 PHOSPHATE.

Avoid CAS 58855-63-3 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

DEA-OLETH-10 PHOSPHATE is a neutral amine salt derived from diethanolamine and oleic acid, primarily functioning as an emulsifier and surfactant in cosmetic formulations. It is designed to stabilize mixtures of oil and water, often forming clear microemulsions.

Summary

Emulsifying Surfactant

Science

Mechanism of Action

As an emulsifying agent, DEA-OLETH-10 PHOSPHATE enables the stable blending of otherwise immiscible oil and water phases into uniform emulsions. Its surfactant properties facilitate this by reducing the surface tension of liquids, supporting cleansing processes, foam generation, and overall product stabilization within various cosmetic systems.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Commonly dusted
Min. effective
0%
Red flag below
0%

This ingredient is considered a significant red flag in cosmetic formulations. It is explicitly listed as 'Banned or found unsafe for use in cosmetics' by the EU Cosmetics Directive, citing high use restrictions and contamination concerns with ethylene oxide and 1,4-dioxane. Furthermore, the National Toxicology Program (NTP) linked topical application of diethanolamine (DEA) and related ingredients to cancer in laboratory animals, prompting the FDA to advise consumers to avoid DEA-related substances.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Demonstrates excellent stability, particularly within clear microemulsion systems.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0%
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has not conducted a specific safety review for DEA-OLETH-10 PHOSPHATE. However, its classification as a diethanolamine salt raises considerable safety concerns. The National Toxicology Program (NTP) reported an association between topical diethanolamine (DEA) and certain related ingredients with cancer in laboratory animals in 1998, likely due to potential residual DEA. The FDA suggests consumers avoid DEA-related ingredients. Critically, the EU Cosmetics Directive has banned or deemed DEA-OLETH-10 PHOSPHATE unsafe for cosmetic use, primarily due to severe use restrictions and potential contamination by impurities such as ethylene oxide and 1,4-dioxane.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Given the explicit ban by the EU, the FDA's recommendation to avoid DEA-related ingredients, and the NTP's findings linking diethanolamine to cancer in animals, DEA-OLETH-10 PHOSPHATE is strongly advised against for use in cosmetic formulations.

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References

Sources