The hair dye is widely used and now it has been incresing in many parts of the world. Many people among the world are using hair dye earlier and more frequent in an attempt to maintain a more youthful appearance.
The chemical substance called Para Phenylene Diamine (PPD) is widely used as a permanent hair dye. This chemical is also used in textile or fur dyes , dark coloured cosmetics, temperory tattoos ,printing inks , black rubber , oils , greases and gasoline.
The hair dye is using by many peoples because it gives a natural look , hair can be shampooed without becoming decoloured and perming to achieve waves or curls and more over the colour is permanent.
CAUSES OF HAIR DYE ALLERGY
The chemical PPD -- Para Phenylene Diamine is the most likely cause of the reaction. PPD is found more than 2/3 rd of permanent dyes and it is very effective in penetrating the hair shaft and follicle , it also binds to protein in the skin. That’s why the allergic reaction is quite common. ManyEuropean countries have banned this chemical.
The other two chemicals that are known to cause allergy are Cobalt ,found in brown hair dyes and glyceryl thioglycolate.
REACTION SYMPTOMS OF HAIR DYE
DIAGNOSIS OF HAIR DYE ALLERGY
Clinically assessement and history is very important in making diagnosis.
The presentation of the lesions especially on the periphery area suggests hair dye reaction.
The diagnosis of the hair dye allergy is made with the use of a patch test , using a standard panel such as the T.R.U.E. Test or the other panel that includes PPD.
TREATMENT OF HAIR DYE ALLERGY