Antimicrobial
O-TOLYL BIGUANIDE
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
O-Tolyl biguanide — an aromatic-amine biguanide mainly known as a rubber-vulcanisation accelerator. Rare in modern cosmetics; class profile includes contact-allergen risk for PPD-sensitive users.
Skin benefits
- Mild antimicrobial activity in hair-care
- Industrially used as a rubber-vulcanisation accelerator
Known concerns
- Aromatic-amine class with documented skin sensitisation
- Mainly industrial use; rare in modern cosmetics
- Limited modern cosmetic safety review
- Potential as cross-reactant for PPD-allergic users
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related antimicrobials
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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.