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SODIUM MAGNESIUM ALUMINUM SILICATE.

Valuable CAS 12040-43-6 / ABSORBENT

SODIUM MAGNESIUM ALUMINUM SILICATE is a versatile mineral-derived ingredient functioning primarily as a rheological modifier, absorbent, and structuring agent. It enhances product texture, stability, and provides an immediate, temporary skin-tightening effect with mattifying properties.

Summary

Absorbent Viscosity Controlling Thickening Agent Emulsion Stabilizer Suspending Agent Opacifying Anticaking Film Former (for tightening)

Science

Mechanism of Action

This ingredient operates through its unique layered molecular structure, acting as an absorbent by trapping excess oil, sebum, and impurities from the skin surface, which contributes to a matte appearance. In cosmetic formulations, it is a crucial rheological modifier, dispersing in water to form a stable colloidal network that effectively adjusts viscosity and stabilizes emulsions, preventing phase separation and ensuring uniform component distribution. When applied topically, it forms a thin, continuous film that, upon drying, exerts gentle mechanical tension on the stratum corneum, creating a perceptible, temporary lifting effect that smooths the appearance of fine lines and wrinkles.

Research

Clinical Evidence

High confidence
Effective range 0.5–3%
Optimal

0.5%

Key findings

  1. 01 Frequently utilized for its structuring capabilities, including precise viscosity adjustment, stabilization of emulsions, and ensuring the homogeneous distribution of various components within a formula.
  2. 02 Typical use levels in instant skin-tightening products demonstrate efficacy in providing thickening, a desirable matte and soft-focus appearance, and accelerating the product's drying time on the skin.

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 9 – 10
0 7 14

Stability

Exhibits robust resistance to pH variations and heat, making it particularly effective in high-pH formulations. It disperses readily in water to form stable colloidal networks, which significantly enhances overall product stability.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
30%
Sensitization risk Low

The CIR Expert Panel has concluded this ingredient is safe for use in cosmetic formulations at concentrations up to 30%. Concerns regarding aluminum compounds as neurotoxins are mitigated by its large molecular size, which prevents significant skin absorption. Daily topical application to human skin for one week showed no adverse effects. While the SCCS has opined on general aluminum safety, a specific statement for SODIUM MAGNESIUM ALUMINUM SILICATE is not available. Studies indicate it is a weak primary skin irritant in rabbits at 4% but caused no cumulative skin irritation in guinea pigs.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

SODIUM MAGNESIUM ALUMINUM SILICATE is a valuable ingredient, effectively optimizing formulation stability and texture, providing significant oil absorption, and offering a temporary instant skin-tightening effect, all while maintaining a low irritancy and comedogenicity profile.

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