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STEARAMIDE DEA-DISTEARATE.

Valuable CAS 51325-39-4 / OPACIFYING, SURFACTANT - FOAM BOOSTING, VISCOSITY CONTROLLING

Stearamide DEA-Distearate is a waxy solid that functions primarily as a multi-purpose formulation aid. It enhances product aesthetics through opacification, boosts foam stability, and precisely controls viscosity, contributing to desirable texture and stability in cosmetic formulations.

Summary

Foam Boosting Opacifying Viscosity Controlling Surfactant

Science

Mechanism of Action

This ingredient operates on multiple fronts within a cosmetic formulation. As an opacifying agent, it reduces product transparency, imparting a visually appealing, uniform appearance. Functioning as a surfactant, it significantly improves the volume, structural integrity, and longevity of foam, particularly in cleansing products. Furthermore, it acts as a precise viscosity-controlling agent, allowing formulators to achieve and maintain optimal product consistency and texture.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

It is a waxy solid that contributes to improving the texture and stability of formulations.

Conflicts

  • Nitrosating agents/systems (due to potential for N-nitroso compound formation)

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
40%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel deems Stearamide DEA-Distearate safe when specific restrictions are meticulously followed. For rinse-off products, its use is considered safe. In leave-on applications, it is permissible only at concentrations that ensure the release of free ethanolamines remains below 5%. The maximum permissible use concentration for Stearamide DEA is 40%. The primary safety concern revolves around the potential for DEA to form carcinogenic nitrosamine compounds; therefore, this ingredient must not be combined with nitrosating agents. Finished products must contain a maximum secondary amine content of 0.5%, raw material secondary amine content must not exceed 5%, and nitrosamine content must be limited to 50 µg/kg. Products containing this ingredient must be stored in nitrite-free containers to prevent adverse reactions. The Scientific Committee on Consumer Safety (SCCS) aligns with these restrictions, approving its use under the conditions detailed in Annex III of the EC Cosmetics Regulation, reinforcing its safety when these specific parameters are met.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Stearamide DEA-Distearate is a valuable formulation aid that effectively enhances product aesthetics, foam stability, and viscosity, provided strict adherence to its regulatory use restrictions, particularly regarding nitrosamine formation, is maintained.

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