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Moumoujus

STEARAMIDE MEA-STEARATE.

Valuable CAS 14351-40-7 / ANTISTATIC, OPACIFYING, SURFACTANT - FOAM BOOSTING, VISCOSITY CONTROLLING

STEARAMIDE MEA-STEARATE is a waxy solid derived from fatty acids, primarily utilized in cosmetic formulations to modify product texture, appearance, and stability. It serves as a versatile ingredient for enhancing the sensory experience of skincare and haircare products.

Summary

Antistatic agent Opacifying agent Surfactant - foam booster Viscosity controlling agent

Science

Mechanism of Action

This ingredient functions as an antistatic agent, effectively reducing electrostatic charges on surfaces like hair. It also acts as an opacifying agent, diminishing transparency and translucency to provide a more consistent product appearance. Furthermore, STEARAMIDE MEA-STEARATE can boost foam quality as a surfactant and control product viscosity, allowing for precise adjustment of formulation consistency.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Clinical assessments on closely related ingredients provide insights into safety. A formulation containing 1.3% Stearamide DIBA-Stearate (further diluted to 4% in the overall product) was found to be mildly irritating but non-sensitizing in a repeated-insult patch test and non-comedogenic.
  2. 02 Stearamide MEA, another related compound, did not induce sensitization in a clinical study at a concentration of 5.27%.
  3. 03 At 17%, Stearamide MEA showed no irritation to human skin but caused minimal to moderate irritation to the eyes of rabbits.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH 9 – 10.5
0 7 14

Stability

An aqueous dispersion of the related Stearamide MEA demonstrates stability within a pH range of 9.0 to 10.5 and is generally stable under normal temperatures and pressures.

Conflicts

  • N-nitrosating agents, due to the potential for nitrosation reactions with related ethanolamides, which can form carcinogenic N-nitroso compounds.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
17%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Stearamide MEA and related ethanolamides are safe for use in rinse-off products. For leave-on applications, they are deemed safe at concentrations that limit the release of free ethanolamines to 5%, with a maximum permitted concentration of 17% for Stearamide MEA. The primary safety concern is the potential for nitrosation in the presence of N-nitrosating agents, hence these ingredients should not be formulated with such compounds. Data for Stearamide DIBA-Stearate was considered insufficient to support its safety. No specific SCCS opinion was found for STEARAMIDE MEA-STEARATE itself.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

STEARAMIDE MEA-STEARATE is a valuable ingredient for enhancing product formulation aesthetics and stability, exhibiting low potential for skin irritation and comedogenicity, though its safety profile and usage restrictions are largely derived from data on related compounds.

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