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 ...

Braids are one of the most in-demand protective hairstyles. Whether you’re rocking a cute, box-braided bob or a long and wavy boho style, the feeling of leaving the chair with fresh braids and knowing ...

Allergic reactions to hair dyes, particularly those containing aromatic amine compounds such as p‐phenylenediamine (PPD), have become a growing public health concern. Exposure to these chemicals may ...

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 ...