What does Germanium dioxide do?

Used in cosmetics as an antimicrobial.

Is Germanium dioxide safe?

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

beauty
industrial
pharma

Germanium dioxide

CAS 12687-69-3

Also registered as 2 other CAS numbers

1971950-71-6 · 1310-53-8

Concern score

Not assessed — no hazard data yet.

Germanium dioxide in plain language

What it is: Also known as Germanium oxide (GeO2) · Germanium(4+) dioxide · germanium(4+);bis(oxygen(2-)) · AKOS030228227 · Dioxyde de germanium · G0607
Show all 16 names
Germania · Germanic oxide (crystalline) · Germanium Oxydatum · Germanium dioxide (GeO2) · Germanium oxide · Germanium(IV) oxide · Germaniumdioxid · UNII-5O6CM4W76A · dioxido de germanio · germanium(4+);oxygen(2-)
What it does: Used in cosmetics as an antimicrobial.
Antimicrobial
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. Germanium dioxide appears in these published regulatory listings.

In marketed US drugs

Recorded in these product areas

Found in consumer products
Industrial

EUCosIngActiveListed in CosIng inventory for cosmetic use.
- Listed in CosIng inventory for cosmetic use.Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 5 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Biocide.
- EPA CPDat observed this chemical in 5 composition records across product categories including Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Biocide.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 Germanium dioxide. 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 Germanium dioxide 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 2019-12-20
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 FDA National Drug Code directory has listed Germanium dioxide in a product composition. These are source records, not Greenveil catalog products.

Source records

Typical roles

Antimicrobial

See products using Germanium dioxide →

Catalog

Found in these products

Their ingredient lists include Germanium dioxide; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 8 →Find products without it →