临床上因为染发过敏的患者几乎每天都能遇到,甚至有病人曾因染发而引发全身疾病最后导致死亡,而把白发染黑的老年人比年轻人更容易因染发对健康造成危害。目前市场上不少化学染发剂含有可能致癌的对苯二胺,对苯二胺是国际公认的一个致癌物质。经常染发的人群乳腺癌、皮肤癌、白血病、膀胱癌的发病率都会增加。越频繁染发、染发时化学试剂与头皮接触越密切,对身体的危害就越大。 Clinically, patients who are allergic to hair dye can encounter almost daily, and even some patients have caused systemic diseases due to hair dye and finally cause death. However, the elderly who are white-haired are more likely to be healthier than the young people due to hair coloring. Currently on the market a lot of chemical hair dye contains carcinogenic p-phenylenediamine, p-phenylenediamine is an internationally recognized carcinogen. Frequent hair dye breast cancer, skin cancer, leukemia, bladder cancer will increase the incidence. The more frequent the hair, hair dye chemical agents and the scalp more closely, the greater the harm to the body.