p-Phenylenediamine, the allergen of the year? Why now? Granted, p-phenylenediamine (PPD) has been the leading permanent hair coloring agent or oxidative hair dye in most of the Western world since ...

Researchers at University of Tsukuba have investigated the internal properties of low-cost materials used in perovskite solar ...

Researchers at University of Tsukuba have investigated the internal properties of low-cost materials used in perovskite solar cells, which are attracting attention for their high efficiency, using ...

"We would understand if the typographical error happens once or twice, and for a single individual to make this mistake ...

Medicine shouldn’t be so hard to access —  so the Four Thieves Vinegar Collective is helping people make their own.

Impact and progress Frontiers' impact Progress Report 2022 All progress reports ...

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 ...