对100例黄褐斑受试者,按黄褐斑颜色、面积情况随机分为受试组和对照组(各50例),分别食用茶儿茶素制剂和安慰剂,每日2次,每次3粒。结果受试组连续食用茶儿茶素制剂30天,黄褐斑颜色积分下降及黄褐斑面积减少均有显著性差异,与对照组比较也有显著性差异,总有效率56%,与对照组(12%)比较有显著性差异,并且未观察到新的黄褐斑产生。表明：茶儿茶素制剂具有祛黄褐斑作用,并对试食者身体健康无明显影响。
100 volunteers were employed in this study and divided into two groups randomly with 50 subjects in each group, i.e., treatment and control groups. People in the treatment group administrated TCP orally 2 times per day and 3 capsules per time. TCP was found to be effective in 28 cases, with a total effective rate of 56%. After a 30-day period, the color and area of chloasma decreased significantly as compared with those examined before TCP administration and control group, which indicted that TCP had the function of dispelling chloasma,and no obviously adverse influence on tested persons.
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