Is MEK PEROXIDES safe to use in EU cosmetics?

MEK PEROXIDES 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.

How do I check if my formula contains MEK PEROXIDES?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 8829121/05/2014

MEK PEROXIDES

MEK Peroxides is a mixture of peroxides obtained by the reaction of MEK and Hydrogen Peroxide.

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

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Exact external identity check

not_found

No complete-name PubChem match was verified. The material may be a mixture, trade-style INCI identity or be indexed under another identifier; this result must not be read as proof that no related chemistry exists.

Exact CosIng INCI name equals a PubChem synonym · Checked 2026-08-31

Inventory details for MEK PEROXIDES

INCI name

MEK PEROXIDES

Description

MEK Peroxides is a mixture of peroxides obtained by the reaction of MEK and Hydrogen Peroxide.

Record provenance

Inventory reference: 88291
Imported identity: MEK PEROXIDES
Source update: 21/05/2014

European Commission CosIng source notes

Annex records for MEK PEROXIDES

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Key data

CAS

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The CosIng inventory records no CAS number for this ingredient. That is the absence of an identifier in the source, not a finding about the substance.

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Restriction

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Function

ANTIMICROBIAL: Preventing and/or slowing down microbial growth.
PRESERVATIVE: Exclusively or mainly intended to inhibit the development of micro-organisms in the cosmetic product. All authorised preservatives are substances in the positive list of Annex V to the Cosmetics Regulation 1223/2009.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#16107 · MEK PEROXIDES

Ingredients with overlapping formulation functions

MAGNESIUM SALICYLATEPRESERVATIVE

MEA-BENZOATEPRESERVATIVE

MEA-SALICYLATEPRESERVATIVE

MEA-UNDECYLENATEPRESERVATIVE, SURFACTANT - CLEANSING

METHENAMINEANTIMICROBIAL, PRESERVATIVE

METHYL BENZOATEFRAGRANCE, PRESERVATIVE, SKIN CONDITIONING - EMOLLIENT, SOLVENT

METHYLCHLOROISOTHIAZOLINONEPRESERVATIVE

METHYLDIBROMO GLUTARONITRILEPRESERVATIVE

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How MEK PEROXIDES appears in the CosIng inventory

The CosIng inventory lists MEK PEROXIDES 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.

MEK PEROXIDES is also tagged with 2 cosmetic functions 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

MEK PEROXIDES 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, MEK PEROXIDES carries the following function designation(s):

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Source note for MEK PEROXIDES

This page reproduces the CosIng inventory entry for MEK PEROXIDES 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 MEK PEROXIDES 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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