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Moumoujus

STEAROYL GLUTAMIC ACID.

Valuable CAS 3397-16-8 / CLEANSING, HAIR CONDITIONING, SKIN CONDITIONING, SURFACTANT - CLEANSING

Stearoyl Glutamic Acid is a multifunctional ingredient lauded for its superior emulsifying capabilities, ensuring stable and smooth product textures. It also functions as a mild surfactant and a skin conditioning agent, promoting hydration and improving overall skin feel.

Summary

Emulsifying Skin conditioning Surfactant/cleansing

Science

Mechanism of Action

This ingredient operates as a highly effective oil-in-water emulsifier due to its amphiphilic structure, adeptly blending hydrophilic and lipophilic components to maintain product homogeneity and stability. Beyond its emulsifying role, it acts as a gentle surfactant, lowering surface tension to cleanse the skin without stripping its natural moisture. Furthermore, it enhances skin conditioning by supporting lamellar gel formation, which boosts moisture retention, prevents dryness, and contributes to a softer, more supple skin texture.

Research

Clinical Evidence

High confidence
Effective range 0.5–2%
Optimal

2%

Transparency

Dusting Analysis

Not commonly dusted

No data available in the research to suggest that Stearoyl Glutamic Acid is commonly dusted or has specific dusting thresholds.

The Formula

Formulation

Solubility
Both
Optimal pH 4.5 – 6
0 7 14

Stability

With an HLB value of approximately 12, Stearoyl Glutamic Acid is optimally suited for oil-in-water emulsions, significantly enhancing formulation stability against separation. It is readily soluble in alkaline solutions and its solubility increases with higher water temperatures. This ingredient can be seamlessly integrated into both hot and cold manufacturing processes by addition to either the oil or aqueous phase. Precise concentration control is crucial for maintaining optimal stability in 'stearoyl glutamate' containing compositions.

Synergies

  • Electrolytes
  • UV-reflecting solids
  • Polar oils
  • Nonpolar oils
  • Preservatives

Safety

Safety Profile

CIR Status
Safe as used
Max tested
2%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Stearoyl Glutamic Acid safe for use in cosmetics under current practices and concentrations, provided formulations are non-irritating. While generally considered mild, reports of allergic contact dermatitis have been noted for its sodium salt (Sodium Stearoyl Glutamate), particularly when emulsifiers are used excessively or combined with other sensitizing ingredients. The 'Irritant' GHS pictogram for the pure chemical refers to the raw material and not its diluted cosmetic application.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Stearoyl Glutamic Acid is a valuable, multifunctional ingredient that enhances formulation stability and texture while offering gentle cleansing and significant skin conditioning benefits across all skin types.

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