Glyoxal

Never allowedReviewed September 18, 2026

Ethanedial

Reactive aldehyde, EU-restricted, and a known sensitizer. Used to preserve a formula.

What it does: Preservation, Actives & treatment
Part of: Formaldehyde and formaldehyde-releasers

Every other ingredient, with the same treatment.

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never allowed28

ParabensPhthalatesFormaldehyde and formaldehyde-releasing preservativesPEG compoundsPolysorbatesEthoxylated ingredientsDEA, TEA and MEA compoundsBHA and BHTPetrolatum, mineral oil and paraffinIsothiazolinone preservativesRetinol and retinyl estersHydroquinoneChemical UV filtersTalcCoal tar and synthetic dyesPFAS and fluorinated compoundsTriclosan and triclocarbanAntibacterials and antimicrobials we excludeSynthetic fragranceSynthetic musksSodium lauryl and laureth sulfateEDTA and synthetic chelatorsIndustrial solventsHeavy metalsPlastic microbeads and film-formersAerosol propellantsOther synthetic preservatives we excludeCyclic silicones

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