Moderate Cosmetic Ingredient

Magnesium Trisilicate

INCI: MAGNESIUM TRISILICATE

CAS Number
14987-04-3
Function
Absorbent, anticaking, bulking, opacifying (cosmetic); also used pharmaceutically as an antacid
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Allowed - also recognized as GRAS (Generally Recognized as Safe) for food/pharmaceutical use; permitted in cosmetics without specific restrictions

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Same talc-family asbestos contamination concerns apply to mineral-sourced material; must verify asbestos-free status; inhalation of fine powder should be minimized. Synthetic origin per INCI dictionary; high absorption capacity; dual cosmetic/pharmaceutical utility; pharmacopeial-grade material available (Ph.Eur.)

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Concern Level: Moderate

Frequently Asked Questions

Is Magnesium Trisilicate safe in cosmetics?

Same talc-family asbestos contamination concerns apply to mineral-sourced material; must verify asbestos-free status; inhalation of fine powder should be minimized. Synthetic origin per INCI dictionary; high absorption capacity; dual cosmetic/pharmaceutical utility; pharmacopeial-grade material available (Ph.Eur.) The EU classifies Magnesium Trisilicate as "permitted". Safety rating: MODERATE.

Is Magnesium Trisilicate allowed in the EU?

Magnesium Trisilicate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Magnesium Trisilicate do in cosmetics?

Magnesium Trisilicate functions as: Absorbent, anticaking, bulking, opacifying (cosmetic); also used pharmaceutically as an antacid. It is classified as a cosmetic ingredient in our database. CAS number: 14987-04-3.

What is the Margin of Safety for Magnesium Trisilicate?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

Compliance Tools

Check Magnesium Trisilicate compliance across multiple jurisdictions:

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Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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