Trimethylsilyl Cellulose
A cosmetic ingredient used as film forming, hair fixing, hair waving or straightening in skincare, haircare, and personal-care products sold in the European Union.
What is it?
Trimethylsilyl Cellulose is Cellulose that has been modified by reaction of the hydroxyl groups on the cellulose with a silane to produce trimethylsiloxy groups.
What does it do?
Trimethylsilyl Cellulose is listed in the EU cosmetic ingredient inventory with the following declared functions:
-
Film forming
forms a thin continuous film on skin, hair, or nails — used in long-wear makeup, sunscreens, and hairsprays
-
Hair fixing
holds hair in a desired style, typically through a flexible film coating each strand
-
Hair waving or straightening
permanently changes the shape of hair through chemical reduction and re-oxidation of the hair's disulfide bonds
-
Uv absorber
absorbs ultraviolet light, used in sunscreens and to protect formulations from UV degradation
-
Viscosity controlling
adjusts the thickness or flow of a formulation
EU regulatory status
Trimethylsilyl Cellulose 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 Trimethylsilyl Cellulose?
Trimethylsilyl Cellulose is a cosmetic ingredient catalogued in the EU CosIng database. Trimethylsilyl Cellulose is Cellulose that has been modified by reaction of the hydroxyl groups on the cellulose with a silane to produce trimethylsiloxy groups.
Is Trimethylsilyl Cellulose allowed in cosmetics in the EU?
Yes. Trimethylsilyl Cellulose is allowed for use in cosmetic products in the EU under Regulation 1223/2009.
What does Trimethylsilyl Cellulose do in cosmetic products?
Trimethylsilyl Cellulose is declared in the EU cosmetic ingredient inventory with these functions: film forming, hair fixing, hair waving or straightening, uv absorber, viscosity controlling.
Related ingredients
Source: EU CosIng database (European Commission). This page is derived from public-sector information published by the European Commission. · Last updated: 23/05/2023