What does Ceric oxide do?

Used in cosmetics as an opacifier.

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

beauty
industrial
pharma

Ceric oxide

CAS 385781-69-1

Also registered as 12 other CAS numbers

956013-06-2 · 1028607-87-5 · 1033016-71-5 · 1255709-68-2 · 1310572-48-5 · 1645286-14-1 · 1715945-36-0 · 1800209-57-7 · 1909261-36-4 · 1962164-22-2 · 2257424-51-2 · 1306-38-3

Concern score

Not assessed — no hazard data yet.

Ceric oxide in plain language

What it is: On cosmetic ingredient lists it appears as “Cerium oxide”.
Also known as Cerium oxide · Cerium(4+) dioxide · Ceria · Cerium dioxide · Cerium(iv) oxide · cerium(4+);bis(oxygen(2-))
Show all 14 names
AKOS030228223 · Cer(iv)-oxid · Cerdioxyd · Cerium oxide (CeO2) · Cerium(4+) oxide · Ofjatjuuucakmk-uhfffaoysa-n · cerium(4+);oxygen(2-) · metal oxide
What it does: Used in cosmetics as an opacifier.
Opacifying
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Ceric oxide appears in these published regulatory listings.

In marketed US drugs

Recorded in these product areas

Found in consumer products
Beauty
Industrial

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 57 composition records across product categories including Raw materials, Construction and building materials, Batteries. EPA CPDat classifies this chemical for functional uses including UV stabilizer.
- EPA CPDat observed this chemical in 57 composition records across product categories including Raw materials, Construction and building materials, Batteries. EPA CPDat classifies this chemical for functional uses including UV stabilizer.Source →
USFDAmarketed drug occurrenceFDA NDC lists this ingredient in 8 active drug products and 8 total products.
- FDA NDC lists this ingredient in 8 active drug products and 8 total products.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Ceric oxide. 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 Ceric oxide yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

7 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated June 2019
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA National Drug Code Directory
regulatory · updated 2026-12-31
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →

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.

Where it has been recorded

How often EPA CPDat has listed Ceric oxide in a product composition. These are source records, not Greenveil catalog products.

Source records

Named organisations

Raw materialsConstruction and building materialsBatteriesElectronics/small appliancesMedical/dentalPersonal care

Typical roles

Opacifying

See products using Ceric oxide →