Skip to content

Preservative

Pyrithione sodium (INNM) (2)

CAS 3811-73-2 Updated
30

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Sodium pyrithione — an antifungal/antimicrobial used historically in antidandruff hair products. EU restricts it to rinse-off hair use only and flags it as toxic for reproduction; treat with caution.

Skin benefits

  • Antifungal/antidandruff action
  • Effective at low %

Known concerns

  • EU Annex III: only rinse-off hair products allowed
  • Skin and eye irritant
  • Reproductive toxicity flags in animal studies
  • Aquatic toxicity

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related preservatives

30
3-Iodo-2-propynylbutylcarbamate
Preservative
 30
BUTYLPARABEN
Preservative
 30
DIMETHYLOL GLYCOL
Preservative
 30
FORMIC ACID
Preservative
 30
HYDROXYDICHLORODIPHENYL ETHER
Preservative
 30
IODOPROPYNYL BUTYLCARBAMATE
Preservative
 30
MDM HYDANTOIN
Preservative
 30
OXYQUINOLINE BENZOATE
Preservative

Check your shelf

Find Pyrithione sodium (INNM) (2) in your products.

Scan any cosmetic product with LuxSense to see if it contains Pyrithione sodium (INNM) (2) and get a full ingredient breakdown with safety scores.

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.