Recently Guangdong Provincial Consumers’ Commission exposed five kinds of hair dye as containing harmful chemicals; now Guangdong Provincial Food and Drug Administration has reported that six more hair dye products, made by five companies, have been found to contain m-Phenylenediamine, a chemical that can cause cancer.

GPFDA spot-checked 81 hair dye samples from 90 cosmetics manufacturers and dealers. The results showed that six of the products contained the carcinogens m-Phenylenediamine with concentrations of between 0.09% and 0.23%. GPFDA has begun to investigate the four Guangdong-based companies and handed over the details of Beijing Zhangguang 101 Hair Dye to the relevant department in Beijing.

Read about it here

http://www.chinacsr.com/en/2009/03/31/4909-more-hair-dye-in-china-found-to-be-harmful/