Chemicals in hair dyes may cause allergies for some people. Around 38% of people who color their hair report having an allergic reaction to hair dye. The most common allergic reaction to hair dye ...

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 ...

The vast majority of reactions to hair-dye products are caused by PPD. [4–6] In past years, PPD was used in permanent hair dyes but not in semipermanent dyes. More recently, PPD has been used in ...

While Mehendi is a popular natural hair dye and conditioner, it's crucial to be mindful of its potential side effects.

Nature Research Intelligence Topics enable transformational understanding and discovery in research by categorising any document into meaningful, accessible topics. Read this blog to understand ...