Where is Para-phenylenediamine (PPD) primarily identified as a powerful sensitizer?
Answer
Hair coloring products
Para-phenylenediamine (PPD) is specifically highlighted in the text as a common, powerful sensitizer that is characteristic of permanent hair dye formulations. Reactions stemming from PPD exposure are almost invariably allergic (ACD). Because of how hair dyes are applied and rinsed, the resulting allergic reaction can sometimes become widespread, extending beyond the scalp area itself. This spread can occur due to runoff during rinsing or transfer from the hair to other areas of the skin, demonstrating its potent sensitizing capability within that specific product category.
Related Questions
What percentage of contact dermatitis cases are Irritant Contact Dermatitis (ICD)?What is the typical delay for an Allergic Contact Dermatitis (ACD) reaction after exposure?What mechanism defines Irritant Contact Dermatitis (ICD) concerning the stratum corneum?Which specific substance is frequently cited as the single most common *allergen* for ACD?What oily resin causes Rhus dermatitis from plants in the Toxicodendron genus?What is the definitive diagnostic step to pinpoint the exact chemical causing Allergic Contact Dermatitis (ACD)?According to the ingredient table, which family causes the primary reaction type Irritant (ICD)?Where is Para-phenylenediamine (PPD) primarily identified as a powerful sensitizer?Which pair names common chemical sensitizers classified as preservatives causing ACD?What is the recommended first step in a Household Swap Audit before professional testing?