Polymethylsilsesquioxane

INCI: POLYMETHYLSILSESQUIOXANE

CAS Number
68554-70-1
Function
Viscosity controlling agent, film former
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR: S - JACT 14(5):373-385, 1995

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Good safety profile with established use in cosmetics; restricted in EU under Annex III with concentration limits.

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Concern Level: Low

Regulatory Flags

EU Restricted

Frequently Asked Questions

Is Polymethylsilsesquioxane safe in cosmetics?

Good safety profile with established use in cosmetics; restricted in EU under Annex III with concentration limits. The EU classifies Polymethylsilsesquioxane as "restricted". Safety rating: GOOD.

Is Polymethylsilsesquioxane allowed in the EU?

Polymethylsilsesquioxane EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Polymethylsilsesquioxane do in cosmetics?

Polymethylsilsesquioxane functions as: Viscosity controlling agent, film former. It is classified as a Cosmetic Ingredient in our database. CAS number: 68554-70-1.

What is the Margin of Safety for Polymethylsilsesquioxane?

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.

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