Journal
AUSTRALASIAN JOURNAL OF DERMATOLOGY
Volume 57, Issue 3, Pages 219-221Publisher
WILEY
DOI: 10.1111/ajd.12454
Keywords
allergic contact dermatitis; allergy; hair dye; henna; indigo; para-phenylenediamine; patch testing; scalp; tannin; tea
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We report a case of a 50-year-old lady with allergic contact dermatitis to para-phenylenediamine, who in her quest to find a substitute hair dye, subsequently reacted to a number of plant-based hair dyes, including pure henna, black tea and indigo powder respectively. While these substances all contain tannins, testing to possible constituents tannic acid and gallic acid was negative.
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