What does Polycaprylylsilsesquioxane silicate do?

Used in cosmetics as a skin-conditioning agent, an anti-sebum and a skin protectant. Polycaprylylsilsesquioxane Silicate is a complex siloxane polymer formed by the hydrolysis and condensation of Tetraethyl Orthosilicate and Trimethoxycaprylylsilane.

Is Polycaprylylsilsesquioxane silicate safe?

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

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Polycaprylylsilsesquioxane silicate

Concern score

Not assessed — no hazard data yet.

Polycaprylylsilsesquioxane silicate in plain language

What it does: Used in cosmetics as a skin-conditioning agent, an anti-sebum and a skin protectant. Polycaprylylsilsesquioxane Silicate is a complex siloxane polymer formed by the hydrolysis and condensation of Tetraethyl Orthosilicate and Trimethoxycaprylylsilane.
Skin conditioning
Anti-sebum
Skin protecting
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. Polycaprylylsilsesquioxane silicate appears in these published regulatory listings.

EUCosIngActivePolycaprylylsilsesquioxane Silicate is a complex siloxane polymer formed by the hydrolysis and condensation of Tetraethyl Orthosilicate and Trimethoxycaprylylsilane.
- Polycaprylylsilsesquioxane Silicate is a complex siloxane polymer formed by the hydrolysis and condensation of Tetraethyl Orthosilicate and Trimethoxycaprylylsilane.Source →

Expert safety opinions

No expert opinion on file for Polycaprylylsilsesquioxane silicate. 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 Polycaprylylsilsesquioxane silicate 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.