摘要： [目的] 分析体外法参数在抗水性防晒化妆品抗水能力评估中的应用。 [方法] 选取4个宣称具有抗水或防水功能的防晒化妆品和2个未宣称抗水或防水功能的防晒化妆品。分别测定入水前后的SPF值、λ_c值及R值(UVA/UVB)，并记录入水前后的MPF吸收曲线。 [结果]6种防晒化妆品样品入水前后的SPF值、λ_c值、R值及MPF曲线均有不同程度的变化。 [结论] SPF值和R值相结合，可以简单推断样品入水前后防晒剂的变化情况，但要获得全面的信息，还需参考MPF曲线的变化情况。λ_c值在防晒化妆品抗水性评价中的应用有待进一步实验和分析。

    关键词： 防晒化妆品；抗水性；评价

    中图分类号： TQ 658.2+4 文献标识码：A 

    Studies on water resistance of sunscreens in vitro LI Zhu1,SU Jin1,ZHOU Shi-wei1,SONG Wei-min2 (1.Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China; 2.School of Public Health, Fudan University, Shanghai 200032, China) Abstract:[Objective] To study the possibility of assessment on water resisitance of sunscreens in vitro. [Methods] Four sunscreen products labeling water resistance and two sunscreen products without labeling water resistant were chosen for assessment. SPF, critical wavelength and the ratio of UVA/UVB were examined before and after samples were put into water. The MPF absorbance curves were recorded. [Results]There were variations of SPF, critical wavelength, the ratio of UVA/UVB and the MPF absorbance curves before and after samples were put into water. [Conclusion]Using the value of SPF and the value of UVA/UVB ratio, the changes of the UV filters before and after samples were put into water could be briefly estimated. The MPF absorbance curves were needed in order to obtain complete information. The results showed that the application of critical wavelength in water resistance assessment needs further study and analysis. ...... 婵犵鈧啿鈧綊鎮樻径鎰畺闁靛ǹ鍎查煬顒€霉閿濆牊纭堕柡浣靛€濋獮宥団偓锝庡亝缁ㄦ氨绱掑☉姗嗘Ч缂佷緤濡囬幉鎾醇閻斿壊妲梺鍝勫暟婵數娑甸崼鏇炶摕闁靛／鍕暯闂佺懓鐡ㄩ悧鏃傜箔閸涱喗濮滈柦妯侯槸瀵潡鏌￠崒姘カ缂佽鲸绻堝畷锝夘敍濠靛棗骞嬮梺鍝勫閸ㄧ敻锝為敃鍌氱婵犲﹤鎳庨崑宥団偓娈垮枟濞叉﹢骞栭崨濠傜窞閺夊牃鏅滈崺鍌炴煃閵夛妇鐭庢繛鏉戞閹秵鎷呭ù瀣壕婵犲灚鎸剧粈澶愭偣閸ヮ剦妫戦柛瀣剁秮瀹曟瑧鎷犻懠顒佺秳濡ょ姷鍋炲ú妯恒€掗懜鐢碘枖閻庯綆鍋呴悡娆撴煟閵娿儱顏ら柍褜鍓氱划搴ㄥ极閹间焦鍤囬柟瀵稿Т椤ｅジ鏌嶉妷锔剧畺闁搞劊鍔戦崹鎯р堪閸愩劍鏋剧紓鍌氬暞閸ㄥ潡濡存径鎰伋婵犻潧饪撮崯蹇涙⒒閸屻倕鏋旈柍褜鍓ㄩ幏锟�


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