Triclosan vs Butylated Hydroxytoluene: which is worse?
Quick answer: Triclosan carries the heavier risk profile. Triclosan is restricted in the EU and allowed in the US; Butylated Hydroxytoluene is — in the EU and — in the US.
| Property | Triclosan | Butylated Hydroxytoluene |
|---|---|---|
| EU status | Restricted | — |
| US status | Allowed | — |
| Risk level | high | — |
| Banned in | — | Japan (banned for food use) |
| Restricted in | European Union | European Union (ADI-based restrictions), United Kingdom, Australia |
| Category | endocrine disruptor | additive |
| Where it hides | antibacterial soap, toothpaste, deodorant | — |
What is Triclosan?
Triclosan is an antibacterial and antifungal agent.
What is Butylated Hydroxytoluene?
Butylated hydroxytoluene (BHT) is a synthetic phenolic antioxidant preservative derived from petroleum. A white crystalline solid with formula C15H24O, it prevents fat oxidation in processed foods, cosmetics, and industrial applications. Often used synergistically with BHA.
Documented risks
Triclosan: An endocrine disruptor linked to antibiotic resistance. Restricted in the EU and banned in US over-the-counter antibacterial soaps, but still allowed in some products.
Butylated Hydroxytoluene: BHT has complex, bidirectional carcinogenicity data — some NTP bioassays found liver tumors in female mice at high doses, while other studies suggested BHT might inhibit cancer initiation. IARC has not formally classified BHT due to conflicting evidence. A 2017 study linked BHT to thyroid hormone disruption in female rats. The American Academy of Pediatrics (2018) recommended reducing synthetic preservative exposure including BHT in children. Kellogg's uses vitamin E in European versions of cereals that contain BHT in US versions — a commercially meaningful substitution.
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