Banned toxic gas
Carbon monoxide
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Carbon monoxide is a highly toxic gas that blocks oxygen transport in the blood. It is explicitly banned from cosmetics in the EU and has no legitimate role in any skincare product.
Skin benefits
- No cosmetic benefit
- Industrial gas, not a skincare actor
Known concerns
- Highly toxic gas, binds haemoglobin and causes asphyxiation
- Listed as prohibited in cosmetics by EU Regulation 1223/2009 Annex II
- Cannot be safely incorporated in consumer cosmetics
- Severe acute inhalation hazard
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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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.