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 itching and soreness are a sign that your skin is allergic to something in the ... In the meantime it would be best for you to avoid hair dyes, but if this is going to be really difficult ...

Indigo powder is a natural hair dye with a long history of use, but it can cause allergic reactions in sensitive individuals. Those with dry, flaky scalps should avoid it, as it may worsen their ...

Hair dyes can be an exciting way to refresh your look, but understanding their risks ensures you make informed beauty choices ...

but some people may be sensitive to dyes such as carmine, Red 40, or Yellow 5 and develop an intolerance or allergic reaction to them. An allergic reaction to food dye can be mild or severe.

One says, “So far, I am very impressed. I purchased the blue black. I have hair dye allergies so I was really apprehensive to try this, but I was pleasantly surprised. There is no odor at all so ...

While ancient dyes were made of plant and animal extracts, the evolution of the practice has seen the use of aggressive chemicals that can trigger allergic reactions and cause harm to users. Hair ...

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 ...

The only way to find out exactly what you are allergic to is to try out a tiny amount of different sorts of dye, with and without bleach, on a small section of your scalp, and see if your skin reacts.