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DEA-CETEARETH-2 PHOSPHATE.

Avoid CAS 162567-77-3 / SURFACTANT - EMULSIFYING

DEA-CETEARETH-2 PHOSPHATE is a diethanolamine salt of Ceteareth-2 Phosphate, primarily functioning as a surfactant and emulsifier in cosmetic formulations. It facilitates the creation of stable mixtures by lowering surface tension between immiscible liquids, while also possessing cleansing properties.

Summary

emulsifying cleansing surfactant

Science

Mechanism of Action

As a Ceteareth derivative, DEA-CETEARETH-2 PHOSPHATE operates by reducing the interfacial tension between oil and water phases, thereby stabilizing emulsions and promoting intimate mixtures. Its surfactant nature also enables it to encapsulate and remove lipid-based impurities and particulate matter from the skin surface, acting as an effective cleansing agent.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Commonly dusted

This ingredient is widely recognized as problematic due to significant safety concerns, including its effective ban within the EU and restrictions by reputable certification bodies like EWG. Formulators committed to safety and transparency are actively seeking safer alternatives, making it a prime candidate for 'dusting' from ingredient lists.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

While specific pH stability data for DEA-CETEARETH-2 PHOSPHATE is not readily available, related Ceteareth compounds can exhibit pH sensitivity, with some derivatives hydrolyzing at higher pH levels. Optimal storage involves a dry, cool environment protected from moisture to maintain ingredient integrity.

Conflicts

  • Nitrosating agents (due to the diethanolamine component, which can react to form potentially harmful nitrosamines)

Safety

Safety Profile

CIR Status
Highly Restricted (EU Banned)
Sensitization risk High

Although the broader category of alkyl phosphates was deemed safe by the Cosmetic Ingredient Review (CIR) Expert Panel when formulated to be non-irritating, DEA-CETEARETH-2 PHOSPHATE itself carries substantial safety concerns. It is subject to high use restrictions due to potential contamination risks from Ethylene Oxide and 1,4-Dioxane. Critically, the EU Cosmetics Directive has classified this ingredient as unsafe for use in cosmetics and it is restricted in EWG VERIFIED products. Furthermore, the diethanolamine (DEA) component raises concerns about the formation of carcinogenic nitrosamines if combined with nitrosating agents.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

This ingredient is strongly discouraged for use in precision skincare due to its classification as unsafe by the EU, high risk of contamination with harmful impurities, and potential for forming carcinogenic nitrosamines.

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