Preservative
MAGNESIUM BENZOATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
The magnesium salt of benzoic acid, used as a mild preservative. EU Annex V/1a permitted with strong food-grade safety; usual benzoate formulation caveats apply.
Function
Skin benefits
- Mild antimicrobial preservative
- EU Annex V/1a permitted
- Long food-grade safety record
- Contributes mild buffering
Known concerns
- Rare contact dermatitis in sensitized users
- Effective only in slightly acidic formulations
- With ascorbic acid + light could form trace benzene
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related preservatives
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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.