Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

MAGNESIUM FLUOROSILICATE.

Avoid CAS 16949-65-8 / ANTIPLAQUE, ORAL CARE

Magnesium Fluorosilicate is an inorganic compound recognized in cosmetics for its abrasive capabilities, contributing to physical skin exfoliation. It also functions as an absorbent, opacifier, and thickening agent to enhance product texture and stability. However, this ingredient is classified as highly toxic, can generate corrosive hydrofluoric acid, and is restricted from cosmetic use within the European Union.

Summary

Abrasive Exfoliant Absorbent Opacifying Thickening Agent

Science

Mechanism of Action

Upon application, Magnesium Fluorosilicate physically exfoliates the skin through abrasive action, effectively removing dead skin cells and surface impurities. Beyond its exfoliating role, it contributes to product formulation by absorbing excess moisture, imparting opacity, and increasing viscosity, thereby enhancing overall texture and stability.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Magnesium Fluorosilicate is readily soluble in water; however, a critical stability concern is its potential to react slowly with water to generate hydrofluoric acid, a highly corrosive substance. Its aqueous solutions are basic and react with both acids and alkalis, which must be considered during formulation.

Conflicts

  • acids
  • alkalis
  • water (due to potential hydrofluoric acid generation)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk High

Magnesium Fluorosilicate is considered highly toxic and may be fatal upon inhalation, ingestion, or absorption through the skin according to industrial safety data. Direct contact can cause slight irritation to skin, eyes, and mucous membranes, and it is classified as causing serious eye irritation. A significant hazard is its slow reaction with water, which produces hydrofluoric acid, a corrosive agent capable of severe chemical burns. The ingredient is identified as 'Restricted' by EWG Skin Deep, indicating a violation of government restrictions in the EU Cosmetics Directive, which prohibits its use in cosmetic products. There are no direct safety assessments by CIR, SCCS, or FDA specifically for its cosmetic application.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

Magnesium Fluorosilicate presents severe safety risks, being highly toxic, capable of causing serious irritation and chemical burns due to hydrofluoric acid generation, and is restricted from cosmetic applications by the EU.

Related

Similar Ingredients

Finding similar ingredients…