1. H.F. Gan, Harmful Substances and Protection in Cosmetics, Cleaning Products and Clothing, Chemical Industry Press, Beijing, 2000, p. 49 and p. 82.
2. Ministry of Health of the People's Republic of China (Ed.), Hygienic Standard for Cosmetics, Military Medical Science Press, Beijing, 2007.
3. Twenty-fourth directive 2000/6/EG, Naval Research Laboratory (U.S.), 056, European Union, 2000.
4. Department of Health, Executive Yuan, Ordinance No. 89028104, Taipei, 2000.
5. Identification and quantitative analysis of kojic acid and arbutine in skin-whitening cosmetics;Masse;Int. J. Cosmet. Sci.,2001