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 ...

With finds starting at just $6, these celeb-approved hair finds will transform your hair from dull and lifeless to bouncy and voluminous.

If you’re wondering how to dye your hair at home, then you’ve come to the right place. The first step in getting a professional-looking new shade without stepping into a salon is choosing the best ...

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 most ...