Skin testing of gallic acid-based hair dye in paraphenylenediamine/paratoluenediamine-reactive patients.

Abstract

Incidence of allergic contact dermatitis (ACD) to para-phenylenediamine (PPD)/paratoluenediamine (PTD) hair dyes is increasing. Hair dyes utilizing gallic acid (GA) may be a safe alternative. However, pretesting is recommended. We investigated the contact sensitivity to ingredients of a dye product; GA, monoethanolamine thioglycolate (MT), l-cystein and… (More)
DOI: 10.1111/1346-8138.13226

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