What does Trimethylsilyl hydrolyzed corn starch do?

Used in cosmetics as a hair fixative, a hair waving or straightening agent and a film former. Trimethylsilyl Hydrolyzed Corn Starch is Hydrolyzed Corn Starch (q.v.) (q.v.) that has been modified by reaction of the hydroxyl groups on the starch with a silane to produce trimethylsiloxy groups.

Is Trimethylsilyl hydrolyzed corn starch safe?

We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

beauty

Trimethylsilyl hydrolyzed corn starch

Concern score

Not assessed — no hazard data yet.

Trimethylsilyl hydrolyzed corn starch in plain language

What it does: Used in cosmetics as a hair fixative, a hair waving or straightening agent and a film former. Trimethylsilyl Hydrolyzed Corn Starch is Hydrolyzed Corn Starch (q.v.) (q.v.) that has been modified by reaction of the hydroxyl groups on the starch with a silane to produce trimethylsiloxy groups.
Hair fixing
Hair waving or straightening
Film forming
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

What we know about this ingredient

Canonical ingredient record built from 1 public-source records.

Regulation

No restrictions found. Trimethylsilyl hydrolyzed corn starch appears in these published regulatory listings.

EUCosIngActiveTrimethylsilyl Hydrolyzed Corn Starch is Hydrolyzed Corn Starch (q.v.) (q.v.) that has been modified by reaction of the hydroxyl groups on the starch with a silane to produce trimethylsiloxy groups.
- Trimethylsilyl Hydrolyzed Corn Starch is Hydrolyzed Corn Starch (q.v.) (q.v.) that has been modified by reaction of the hydroxyl groups on the starch with a silane to produce trimethylsiloxy groups.Source →

Expert safety opinions

No expert opinion on file for Trimethylsilyl hydrolyzed corn starch. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Trimethylsilyl hydrolyzed corn starch yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

1 data source

Where this comes from

CosIng
regulatory · updated 2026-09-23
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Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.