Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...

Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China ...

College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010021, China School of Physical Science and Technology, Inner Mongolia University, Hohhot 010021, China ...