Octyl methoxycinnamate

Octyl methoxycinnamate (INCI), or octinoxate (USAN), is an organic compound that is an ingredient in some sunscreens and lip balms. It is an ester formed from methoxycinnamic acid and 2-ethylhexanol. It is a clear liquid that is insoluble in water.

Its primary use is in suncreens and other cosmetics to absorb UV-B rays from the sun, protecting the skin from damage.