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Quick answer: Hydroquinone carries the heavier risk profile. Boric acid is restricted in the EU and allowed in the US; Hydroquinone is banned in the EU and allowed in the US.
| Property | Boric acid | Hydroquinone |
|---|---|---|
| EU status | Restricted | Banned |
| US status | Allowed | Allowed |
| Risk level | medium | high |
| Banned in | — | European Union |
| Restricted in | European Union | — |
| Category | cmr | cmr |
| Where it hides | talc-free powders, bath products | skin-lightening cream, dark-spot corrector |
Boric acid (Boric Acid) is a buffering and antimicrobial agent.
Hydroquinone is a skin-lightening agent that inhibits melanin production.
Boric acid: A reproductive toxicant; the EU restricts borates in cosmetics.
Hydroquinone: Linked to ochronosis and possible carcinogenicity. Banned in EU cosmetics; sold over-the-counter in the US up to 2%.
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