Hall's Vegetable Sicilian Hair Renewer advertisement ... for their readers’ “information and amusement,” in products such as Buckingham’s Dye for the Whiskers and Ayer’s Hair Vigor. Buckingham's 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 ...

If these products are used ... talk to your healthcare provider about exposure risk. Vegetable-based hair dyes are available, which may be an option for people who are concerned about the safety ...

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 ...