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Isoamyl p-Methoxycinnamate

What Isoamyl p-Methoxycinnamate is & what it does

Amiloxate, an oil-soluble UVB filter related to octinoxate that absorbs UVB efficiently. It is used mainly in European formulas.

What is Isoamyl p-Methoxycinnamate and what does it do in sunscreen?

It is an oil-soluble UVB filter, also known as Amiloxate, related to octinoxate. It absorbs UVB rays and converts them to a small amount of heat, helping protect skin from the burning part of the UV spectrum. It is used mainly in European-style formulas as part of a broader filter blend.

Is Isoamyl p-Methoxycinnamate a UV filter?

Yes. It is an organic (chemical) UV filter that works by absorbing ultraviolet light rather than sitting on the surface like a mineral filter. Its coverage is concentrated in the UVB range, so formulators pair it with other filters to reach full broad-spectrum protection.

Is Isoamyl p-Methoxycinnamate safe?

Yes, as used in sunscreen. It is an approved UV filter in the European Union and other regions and is used within set concentration limits. Most people tolerate it well, though anyone with very reactive skin can patch test first, as with any sunscreen.

Does Isoamyl p-Methoxycinnamate clog pores?

Generally no. It is an oil-soluble liquid filter used at controlled levels and is not flagged as comedogenic in our data. As with any sunscreen, the overall richness of the formula matters more for breakouts than this single filter.

What else is Isoamyl p-Methoxycinnamate called?

Its common short name is Amiloxate. On a label you will usually see the full INCI "Isoamyl p-Methoxycinnamate". It is chemically close to octinoxate (Ethylhexyl Methoxycinnamate), another oil-soluble UVB filter.

Sunscreens with Isoamyl p-Methoxycinnamate

We rate 125 sunscreens that contain it, showing the top 10 by overall score:

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