Ingredient dictionary

Ethylhexyl Methoxycinnamate

Also listed as: Octinoxate, Octyl Methoxycinnamate

Ethylhexyl Methoxycinnamate is an oil-soluble UV filter that absorbs UVB sunlight, helping protect skin from sunburn. It is on the label of 34 products in our library. Checked against our library November 6, 2026.

The catch: our code flags this as a chemical UV filter, a type of organic sunscreen filter. Very sensitive skin, and people who want mineral-only sunscreens, often check for these.

Chemical UV filters. Organic sunscreen filters such as avobenzone, octocrylene and homosalate.

What Ethylhexyl Methoxycinnamate does

Absorbs UVB light in sunscreens
Works alongside other UV filters
Blends into oils and lightweight lotions

Ethylhexyl Methoxycinnamate is a synthetic compound. Chemists make it by combining a cinnamic acid derivative with an alcohol, a process called esterification. The result is an oily liquid that mixes well with other oils and emollients.

Formulators use it because it absorbs UVB rays, the shorter wavelengths that cause sunburn, and it blends easily into lotions. It is often paired with other filters for broader coverage. Sunlight can slowly break it down, so formulas usually include stabilizers. On skin, it usually feels light.

Good for

Suits people who want daily sun protection and are comfortable with chemical filters. Less suited to those who prefer mineral-only formulas.

Frequently asked questions

Is Ethylhexyl Methoxycinnamate safe for sensitive skin?

Most people tolerate it well, but it is a chemical filter, so some with very sensitive skin may react. Patch testing a small area first is a sensible step. If you have a known reaction, check with a dermatologist before using it.

Is Ethylhexyl Methoxycinnamate the same as Octinoxate?

Yes. Octinoxate is a common name for the same ingredient, and you may see either name on labels. Ethylhexyl Methoxycinnamate is the standard name used on ingredient lists.