The mixture of paraphenylenediamine(PPD) and H 2O 2 (the main ingredient of oxidized hair dyes and its oxidant) is appiled on to the skin of Balb/c mice,once per three days,for a month.

• 研究氧化型染发剂主要成分对苯二胺(PPD)氧化产物经皮吸收后对小鼠的亚慢性毒作用。