Polysilicone-21
A cosmetic ingredient used as viscosity controlling in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Polysilicone-21 is a composite powder produced by first reacting Bis-Vinyldimethicone with Hydrogen Dimethicone to form silicone elastomer particles. Excess silicon hydride groups on the surface of the elastomer particles are reacted with methyltrimethoxysilane, tetramethylorthosilicate, and trimethylsilanol to form a resinous coating on the elastomer particle
What does it do?
Polysilicone-21 is listed in the EU cosmetic ingredient inventory with the following declared functions:
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Viscosity controlling
adjusts the thickness or flow of a formulation
EU regulatory status
Polysilicone-21 is allowed for use in cosmetic products in the European Union under Regulation 1223/2009. It is not subject to a specific Annex restriction at the time of writing.
Frequently asked questions
What is Polysilicone-21?
Polysilicone-21 is a cosmetic ingredient catalogued in the EU CosIng database. Polysilicone-21 is a composite powder produced by first reacting Bis-Vinyldimethicone with Hydrogen Dimethicone to form silicone elastomer particles. Excess silicon hydride groups on the surface of the elastomer particles are reacted with methyltrimethoxysilane, tetramethylorthosilicate, and trimethylsilanol to form a resinous coating on the elastomer particle
Is Polysilicone-21 allowed in cosmetics in the EU?
Yes. Polysilicone-21 is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Polysilicone-21 do in cosmetic products?
Polysilicone-21 is declared in the EU cosmetic ingredient inventory with these functions: viscosity controlling.
What is the CAS number of Polysilicone-21?
The CAS (Chemical Abstracts Service) number for Polysilicone-21 is 1013922-83-2.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 15/10/2010