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ALUMINUM STEAROYL GLUTAMATE.

Valuable / MOISTURISING, SKIN CONDITIONING

Aluminum Stearoyl Glutamate is a specialized amino-acid derivative primarily used as a hydrophobic surface treatment for pigments and an anionic emulsifier. It enhances product stability, wear, and can contribute to skin hydration.

Summary

Emulsifying Skin Conditioning Surfactant Pigment Coating

Science

Mechanism of Action

It functions by chemically bonding to pigments, rendering them hydrophobic for improved dispersion and skin adhesion. In emulsions, it forms lamellar gel networks that mimic skin lipids, stabilizing the oil-water interface and potentially reducing Transepidermal Water Loss (TEWL).

Research

Clinical Evidence

High confidence
Effective range 0.1–5%
Optimal

1%

Key findings

  1. 01 At 1.0%-3.0% concentration, it functions as a primary O/W emulsifier, contributing to high physical stability and fine droplet sizes. Related stearoyl glutamate studies suggest significant skin hydration enhancement via lamellar structures.
  2. 02 At 0.1%-5.0% concentration, it effectively treats mineral pigments (e.g., Titanium Dioxide), making them hydrophobic, which improves their dispersion, skin adhesion, and long-wear properties.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 5 – 8
0 7 14

Stability

Highly stable in electrolyte-rich environments and compatible with water-soluble UV filters, offering formulation flexibility.

Synergies

  • Water-soluble UV filters

Conflicts

  • Strong cationic surfactants
  • Highly acidic environments (pH < 4.5)

Safety

Safety Profile

CIR Status
Safe as used
Max tested
5%
Sensitization risk Low

Reviewed as safe by CIR, demonstrating low irritation and sensitization potential. Dermal absorption of its aluminum component is noted as very low (approx. 0.01%).

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Aluminum Stearoyl Glutamate is a valuable ingredient, enhancing formulation stability and cosmetic elegance while offering mild skin conditioning benefits across all skin types.

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