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SODIUM MAGNESIUM FLUOROSILICATE.

Valuable / ABRASIVE, ABSORBENT, OPACIFYING, VISCOSITY CONTROLLING

Sodium Magnesium Fluorosilicate is a synthetic layered silicate that functions primarily as a viscosity-controlling agent, forming thixotropic gels to improve texture. It also enhances formulation stability, provides a smooth skin feel, and offers absorbent and opacifying properties.

abrasive absorbent opacifying viscosity controlling

Science

This synthetic layered silicate primarily controls viscosity by forming unique quick-breaking (thixotropic) gels when concentrations exceed 2% in water, which contributes to a luxurious, smooth skin feel. It significantly improves the structural integrity and stability of formulations by enhancing emulsion stability and effectively preventing the settling of particles, pigments, and active ingredients. Additionally, it can impart a matt, soft-focus appearance, accelerate drying times in film-forming products, and in certain applications, provide a mild abrasive or polishing effect to aid in skin surface cleansing.


Research

Low confidence
Effective range 0.1–5%
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH ≤5.5
0 7 14

Stability

This ingredient is engineered to optimize formulation performance within a pH range of 5.5 or lower. It readily forms thixotropic gels when incorporated at concentrations above 2% in water and exhibits compatibility with solutions containing up to 40% ethanol.

Conflicts

  • moisture
  • strong oxidizing agents

Safety

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

Generally recognized as safe for cosmetic use, the Cosmetic Ingredient Review (CIR) Panel has previously deemed related silicates safe as used. Ratings from EWG Skin Deep indicate a low concern for cancer, allergies & immunotoxicity, and reproductive toxicity. SkinSAFE affirms its 'Irritant Free' status, denoting absence of numerous common allergens and irritants. Typical cosmetic use levels range from 0.1% to 5%.


Your Skin

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

Our Assessment

Valuable

This versatile synthetic silicate is highly valuable for improving the aesthetic appeal, structural stability, and sensory experience of a diverse array of skincare and cosmetic formulations.


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