防晒化妆品防晒效果评价方法──紫外吸光度法的研究

The Method of Sunscreen Effect Evaluation of CosmeticsUltra-Violet Spectroscopy

评价防晒化妆品防晒效果的紫外吸光度法是使用紫外分光光度计测定产品的吸光度值Ａ，根据Ａ值的大小，评价产品的性能，并可与防晒因子（ＳＰＦ）值对照。选择了实验条件，对比了几种不同的制样方法，划分了评价防晒效果高低的等级，测定了部分国内外防晒化妆品。

This paper studies the method of ultra-violet spectroscopy for the evaluation of sunscreens products.According to its value, the property of the product which can be contrasted to the sun protection factor (SPF)valuewasevaluated.The conditions and the different sample-preparation methods were tested.The grade of the sunscreen effect was classified.