Is CUPROUS OXIDE safe to use in EU cosmetics?

CUPROUS OXIDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Always verify against the current official CosIng database before formulating.

What other records share CAS 1317-39-1?

CAS 1317-39-1 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

InventoryRef 8920026/07/2012

CUPROUS OXIDE

Q: How do I check if my formula contains CUPROUS OXIDE?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Cuprous Oxide is the inorganic oxide. See "Regulatory and Ingredient Use Information," for Colorants in Volume 1, Introduction, Part A.

CUPROUS OXIDE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Inventory details for CUPROUS OXIDE

INCI name

CUPROUS OXIDE

Description

Cuprous Oxide is the inorganic oxide. See "Regulatory and Ingredient Use Information," for Colorants in Volume 1, Introduction, Part A.

Annex records for CUPROUS OXIDE

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Key data

CAS

1317-39-1

215-270-7

Restriction

—

Function

SKIN CONDITIONING

How CUPROUS OXIDE appears in the CosIng inventory

The CosIng inventory lists CUPROUS OXIDE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

CUPROUS OXIDE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

CUPROUS OXIDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, CUPROUS OXIDE carries the following function designation(s):

SKIN CONDITIONING

CAS 1317-39-1 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for CUPROUS OXIDE

This page reproduces the CosIng inventory entry for CUPROUS OXIDE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research CUPROUS OXIDE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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Tools & next steps

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