Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer

INCI: DIMETHICONE/PHENYL SILSESQUIOXANE/PHENYL BIS-SILSESQUIOXANE CROSSPOLYMER

CAS Number
Not individually assigned
Function
Skin conditioning, film forming, slip modifier
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” not included in CIR 2012 crosspolymer report

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Not CIR-reviewed; limited publicly available safety data. Dual silsesquioxane structure (phenyl silsesquioxane + phenyl bis-silsesquioxane) is more complex than previously assessed single-silsesquioxane crosspolymers. Phenyl groups may affect phototoxicity profile โ€” phototoxicity testing recommended. Particle size and morphology data needed if used as powder. Requires robust read-across dossier for CPSR.

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Concern Level: Moderate

Frequently Asked Questions

Is Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer safe in cosmetics?

Not CIR-reviewed; limited publicly available safety data. Dual silsesquioxane structure (phenyl silsesquioxane + phenyl bis-silsesquioxane) is more complex than previously assessed single-silsesquioxane crosspolymers. Phenyl groups may affect phototoxicity profile โ€” phototoxicity testing recommended. Particle size and morphology data needed if used as powder. Requires robust read-across dossier for CPSR. The EU classifies Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer as "permitted". Safety rating: MODERATE.

Is Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer allowed in the EU?

Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer do in cosmetics?

Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer functions as: Skin conditioning, film forming, slip modifier. It is classified as a cosmetic ingredient in our database. CAS number: Not individually assigned.

What is the Margin of Safety for Dimethicone/Phenyl Silsesquioxane/Phenyl Bis-Silsesquioxane Crosspolymer?

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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