Instead, these are hair dyes uniquely formulated for graying and meant to return you to your previously natural color. According to celebrity barber Chaz Hazlitt, these hair dyes are specifically ...
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 ...
As the beauty and cosmetic industry evolves, many new skincare, haircare and hair styling products continue to flood the market. However, the safety of some of these products has come under ...
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 ...