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Quick answer: Benzyl butyl phthalate carries the heavier risk profile. Benzyl butyl phthalate is banned in the EU and allowed in the US; Diisononyl phthalate is restricted in the EU and allowed in the US.
| Property | Benzyl butyl phthalate | Diisononyl phthalate |
|---|---|---|
| EU status | Banned | Restricted |
| US status | Allowed | Allowed |
| Risk level | high | medium |
| Banned in | European Union | — |
| Restricted in | — | European Union |
| Category | phthalate | phthalate |
| Where it hides | nail polish, perfume, hairspray | fragranced products, plastic applicators |
Benzyl butyl phthalate is a phthalate plasticizer historically used in fragrances, nail polish and hair products.
Diisononyl phthalate (Diisononyl Phthalate) is a phthalate plasticizer.
Benzyl butyl phthalate: Benzyl butyl phthalate is a reproductive and developmental toxicant and endocrine disruptor. The EU bans CMR phthalates in cosmetics; the US has no federal cosmetic ban.
Diisononyl phthalate: Restricted in the EU over reproductive concerns.
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