
Sun Care
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Ingredient Identity
INCI / Name: Isoamyl p-Methoxycinnamate
CAS No: 71617-10-2
Appearance: Clear colorless to pale yellow oily liquid
Usage / Properties / Application
mainly used for UVB protection, absorbing approximately 280–320 nm and approved in the EU at concentrations up to 10%.
Scientific review data report its maximum absorption wavelength at around 308 nm with a molar absorption coefficient of 24,355, supporting its role as an SPF-building UVB absorber in sunscreen and daily UV-protective skincare systems.
It is best positioned for sun-care oils, emulsions, outdoor SPF products, and formulations needing lightweight UVB protection, usually combined with UVA filters such as Avobenzone, DHHB, or BEMT to achieve broader-spectrum protection.
