Homosalate vs Formaldehyde (free): which is worse?
Quick answer: Formaldehyde (free) carries the heavier risk profile. Homosalate is restricted in the EU and allowed in the US; Formaldehyde (free) is banned in the EU and allowed in the US.
| Property | Homosalate | Formaldehyde (free) |
|---|---|---|
| EU status | Restricted | Banned |
| US status | Allowed | Allowed |
| Risk level | medium | high |
| Banned in | — | European Union |
| Restricted in | European Union | — |
| Category | uv filter | cmr |
| Where it hides | sunscreen, SPF moisturizer, SPF foundation | nail hardener, keratin treatment, eyelash glue |
What is Homosalate?
Homosalate is an organic UV filter that absorbs UVB radiation.
What is Formaldehyde (free)?
Formaldehyde (free) is free formaldehyde used directly as a preservative and in salon hair treatments.
Documented risks
Homosalate: A suspected endocrine disruptor; the EU limits it to 7.34% in face products (2025), well below typical US concentrations.
Formaldehyde (free): A known human carcinogen (IARC Group 1). Banned from direct use in EU cosmetics; allowed in US products with limited oversight.
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