Abstract: Method for determination of sun-screening agent specified in Safety and Technical Standards for Cosmetics (2015 Edition) was improved for avoiding the use of tetrahydrofuran and perchloric acid.The new method was established with Waters Symmetry Shield RP18 as chromatographic column,using methanol and water as mobile phase for gradient elution.All results showed good linear relationship in certain mass concentration range;the limit of quantification is within 0.5~1.25 mg/L;the spiked recoveries are within 98.0%~100.6%.

Key words: cosmetics, sun-screening agent, high performance liquid chromatography