Preservative
PROPIONIC ACID
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A short-chain (C3) organic acid approved as an EU cosmetic preservative up to 2%. Effective against mould and yeast; corrosive when neat but well-tolerated at allowed cosmetic concentrations.
Function
Skin benefits
- EU-approved preservative up to 2% (Annex V #2)
- Broad-spectrum antimicrobial against mould/yeast
- Naturally occurring fatty acid
Known concerns
- Skin/eye corrosive at neat levels
- Pungent odor
- Mild irritation at the upper end of allowed cosmetic range
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.