Qualitative and Quantitative Estimation of Hydroquinone in Skin Whitening Cosmetics

Saima Siddique, Zahida Parveen, Zeeshan Ali, Muhammad Zaheer

PCSIR Labs Complex, Lahore, Pakistan.

DOI: 10.4236/jcdsa.2012.23042                

Abstract

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.

Keywords

Hydroquinone; HPLC; Whitening Cosmetics; Thin Layer Chromatography

Conflicts of Interest

The authors declare no conflicts of interest.

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