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Ingredient · INCI reference

Isoamyl p-Methoxycinnamate

a.k.a. Amiloxate

CAS 71617-10-2

Isoamyl p-Methoxycinnamate (Amiloxate) is an older organic UVB filter that is not photostable on its own. It is approved up to 10% in the EU, Japan, and Korea, but is not approved in the US. Available safety data shows no endocrine or reef flags and an EWG score of 2.

Legacy organic Pre-2000 chemical filters; broadly approved. ! UNSTABLE Photo-unstable — degrades under sunlight without stabilising filters. Gen · old organic
01 Spectrum coverage UVB
UVB 290–320nm UVB (290–320nm) — covered UVA-II 320–340nm UVA-II (320–340nm) — not covered UVA-I 340–400nm UVA-I (340–400nm) — not covered
02 Regional approval · max %
JP ✓ 10% Japan: Approved · max 10% KR ✓ 10% South Korea: Approved · max 10% EU ✓ 10% Europe: Approved · max 10% US — — United States: No data
03 Safety profile
EWG score
2
Reef-toxic
No
Endocrine disruptor
No
Comedogenicity
0
Reference

Frequently asked questions

Is Amiloxate photostable?

No. It is not photostable on its own, so formulators typically pair it with photostabilizers or co-filters such as octocrylene or bemotrizinol to maintain UV protection over time.

Is it allowed in US sunscreens?

It is not approved in the US in this data, so you will mainly see it in EU, Japanese, and Korean sunscreens, all of which allow it up to 10%.

What does Amiloxate protect against?

It absorbs UVB only, so it must be combined with UVA filters for broad-spectrum protection. It is often used as part of a multi-filter UVB blend rather than the sole UV active.

Is it considered safe?

Available data shows EWG 2, no endocrine disruption flag, and no reef-toxicity flag, putting it among the lower-concern older cinnamate-style UVB filters.

Products in catalogue

Containing Isoamyl p-Methoxycinnamate