Toxic heavy metal
Thallium and its compounds
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Thallium is a highly toxic heavy metal that causes serious neurological damage and hair loss. It is banned from cosmetics in the EU and appears in our catalog only so users can confirm it is never present.
Skin benefits
- No cosmetic benefit; listed for transparency only
- Historically used in pesticides and medicines, now largely abandoned
Known concerns
- Thallium is one of the most acutely toxic heavy metals known
- Causes severe neurotoxicity, alopecia and multi-organ failure
- Banned in cosmetic products under EU Cosmetics Regulation Annex II
- Bioaccumulative and persistent environmental contaminant
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.