Bemotrizinol (INN[1][2]/USAN,[3] INCI bis-ethylhexyloxyphenol methoxyphenyl triazine) is an oil-soluble organic compound that is added to sunscreens to absorb UV rays.

[5] Tinosorb S Aqua, recently developed by BASF, is bemotrizinol in a PMMA matrix dispersed in water.

[6] Bemotrizinol has strong synergistic effects on the SPF when formulated with bisoctrizole, ethylhexyl triazone or iscotrizinol.

[7] It is the most effective UV absorber available measured by SPF, based on the maximum concentration permitted by European legislation.

[11][12] Unlike some other organic sunscreen actives, it shows no estrogenic effects in vitro.