Triethoxysilylethyl Dimethicone/Methicone Copolymer

INCI: TRIETHOXYSILYLETHYL DIMETHICONE/METHICONE COPOLYMER

CAS Number
No single publicly assigned CAS (proprietary copolymer)
Function
Skin Conditioning, Film-Forming, Surface Modifier (hybrid silicone resin for long-wear cosmetics)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for cosmetic use; falls under CIR silicone safety assessments

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Ethoxysilyl groups hydrolyze during formulation โ€” ensure full curing/reaction before skin contact

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Concern Level: Low

Frequently Asked Questions

Is Triethoxysilylethyl Dimethicone/Methicone Copolymer safe in cosmetics?

Ethoxysilyl groups hydrolyze during formulation โ€” ensure full curing/reaction before skin contact The EU classifies Triethoxysilylethyl Dimethicone/Methicone Copolymer as "permitted". Safety rating: GOOD.

Is Triethoxysilylethyl Dimethicone/Methicone Copolymer allowed in the EU?

Triethoxysilylethyl Dimethicone/Methicone Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Triethoxysilylethyl Dimethicone/Methicone Copolymer do in cosmetics?

Triethoxysilylethyl Dimethicone/Methicone Copolymer functions as: Skin Conditioning, Film-Forming, Surface Modifier (hybrid silicone resin for long-wear cosmetics). It is classified as a cosmetic ingredient in our database. CAS number: No single publicly assigned CAS (proprietary copolymer).

What is the Margin of Safety for Triethoxysilylethyl Dimethicone/Methicone Copolymer?

adequate 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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