ALLERGIC CONTACT DERMATITIS TO PARAPHENYLENEDIAMINE
Irritated, itchy scalp soon after dying hair.
- Paraphenylenediamine is a chemical compound commonly used to dye hair black.
- It is a common sensitizer.
- Prohibited in the US for use in cosmetics and limited in hair dye to 6%.
- Continues to be used in unregulated temporary tattoos and black henna products [JAAD 2015;72;724].
Allergic contact dermatitis along the hair line soon after dying hair.
Allergy to PPD in a man who would dye his mustache.
Patch test reaction to paraphenylenediamine.
Severe reaction, with blistering, to paraphenylenediamine.
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