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Ethylhexyl Methoxycinnamate

A classic sunburn shield.

What it does

A sunscreen filter, also called octinoxate. It absorbs UVB rays, the ones that cause sunburn.

Good to know

EU scientists (SCCS) found it safe up to 10% in 2025, but noted it can act a little like the hormone estrogen. An FDA-led study found it passes into the blood. Hawaii bans sunscreens with it.

Often found in: Sunscreens, Lip balms, Perfumes, Hair care

Around the world

• United States: Sold in sunscreens as an over-the-counter drug, up to 7.5%. Hawaii bans sunscreens containing it. Source
• EU and UK: Max 10% as a UV filter. Source
• Canada: Not on the Hotlist. In sunscreen, it's regulated as a drug or natural health product, not a cosmetic. Source
• Australia: No limit in Australia's Poisons Standard. Source

Sources

• SCCS opinion: Ethylhexyl methoxycinnamate (EHMC) (2025) (Independent)
• Effect of sunscreen application on plasma concentration of sunscreen active ingredients: a randomized clinical trial (JAMA, 2020) (Independent)
• Hawaii Revised Statutes 342D-21 (sunscreen ban) (Regulator)