METHYLPHENYL-1,3-DIOXANOL
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A formaldehyde-releasing preservative and fixative used in some cosmetic formulations to extend product shelf life.
Methylphenyl-1,3-Dioxanol is a dioxolane-type compound that can act as a formaldehyde releaser in aqueous cosmetic formulations. Formaldehyde releasers are under EU scrutiny due to sensitization concerns. The SCCS has flagged this class for potential allergenicity, and it must be labelled per EU Cosmetics Regulation requirements.
Skin benefits
- Extends cosmetic product shelf life
- Functions as fixative in fragrance formulations
Known concerns
- Formaldehyde releaser - potential sensitizer
- Must be declared on label as preservative
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.