英文摘要 |
Due to the rapid growth of the sunscreen products recently, 25 case samples were investigated to study whether any product contain p-Aminobenzoic acid or tis ester or not. It was found that three of twenty-five samples (ie 12%) weren't licensed. Among them, however, two samples couldn’t meet the requirement (below 4%) after being analysed by a high performance liquid chromatographic method. |