Preservative
Hexa-2,4-dienoic acid and its salts
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Sorbic acid and its salts (e.g., potassium sorbate) — widely used food-grade preservatives permitted in EU cosmetics up to 0.6% as acid. Some users develop contact sensitization or mild erythema.
Skin benefits
- Effective preservative against yeast and mold
- Food-grade safety profile
- Permitted at up to 0.6% in EU cosmetics
Known concerns
- Can cause contact sensitization in some users
- Mild erythema reported at higher levels
- Less stable than parabens above pH 6.5
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, so always read the physical product label and consult a healthcare professional for personal concerns.