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 ...

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 ...

The last three times I have used a semi-permanent hair colour it has left my scalp extremely itchy. I have washed my hair with T-gel shampoo, but it is still itchy.

The most common allergic reactions to hair dye chemicals are dermatitis of the eyes, ears, scalp and face, which may include a rash, extreme swelling and a severe burning sensation on the scalp.

The Minnesota Department of Health (MDH) is warning against use of henna products that contain additives to create “temporary tattoos.” Materials that are sometimes added to henna can cause ...

she says. "It’s not widely known but hair dye contains potentially health-damaging chemicals, some of which are even used in industrial processes. They may cause allergic responses, dermatitis ...

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 ...