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 ...

A research team has devised a novel method to prepare carbonized polymer nanodots capable of emitting multi-color ultra-long ...

AN eyebrow expert has weighed in on her go-to methods for tinting. She warned that a viral at-home beauty trend could do more ...

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 ...

Ask your stylist about alternatives, such as organic hair dyes and other products that don’t contain ammonia, peroxide, or para-phenylenediamine (PPD). You can find home laser devices on the market.

Which hair hue to choose? We asked hairstylists for the best semi-permanent hair dyes that still give salon quality but less ...

The method developed in this research is to synthesize carbonized polymer nanodots using ortho-phenylenediamine (oPD) and polyacrylic acid (PAA) hydrothermal synthesis. Researchers mixed some ...

Q: People shouldn't color hair because hair dye is carcinogenic? A: Hair dye contains "p-phenylenediamine", a chemical substance that may pose a certain risk of cancer only with frequent and ...

In addition, the molecular weight of the polyimide derived from endo-DiSXDA and m-phenylenediamine was low, and even the Tg was not reported. Thus, it is worthwhile to distinguish endo- from exo ...

On October 1, 2023, DTSC finalized the regulation listing motor vehicles containing N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) as a Priority Product under the Safer Consumer Products ...