Qualitative and Quantitative Estimation of Hydroquinone in Skin Whitening Cosmetics
Qualitative and Quantitative Estimation of Hydroquinone in Skin Whitening Cosmetics作者机构：PCSIR Labs Complex Lahore Pakistan
出 版 物：《Journal of Cosmetics, Dermatological Sciences and Applications》 (化妆品、皮肤病及应用期刊（英文）)
年 卷 期：2012年第2卷第3期
页 面：224-228页
主 题：Hydroquinone HPLC Whitening Cosmetics Thin Layer Chromatography
摘 要：Hydroquinone has been used for decades as a skin lightening agent. Its use in cosmetics has been banned as a result of skin problems including contact dermatitis and ochronosis. A total of 22 samples of different skin whitening cosmetics were collected from local market. They were analyzed by using thin layer chromatography and HPLC for qualitative and quantitative determination of their hydroquinone contents. The hydroquinone was extracted from samples by using 96% ethanol and was subjected to TLC analysis. Eleven out of 22 samples were found to contain hydroquinone. The HPLC analysis showed the concentration of hydroquinone ranged from 0.002% to 0.092% in the cosmetic samples.
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