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Background
Allergic contact dermatitis caused by henna‐based hair‐colouring products has been associated with adulteration of henna with p‐phenylenediamine (PPD).
Objectives
To develop a testing approach based on in vitro techniques that address key events within the skin sensitization adverse outcome pathway in order to evaluate the allergenic potential of hair‐colouring products.
Methods
The...
Background
Hair cosmetics such as hair dyes, bleaching, waving, and cleansing products are composed of numerous chemical ingredients. Allergic reactions to these contact allergens, other than p‐phenylenediamine, are rarely reported.
Objectives
To study the incidence of patch test reactions to hair cosmetic allergens and identify the factors associated with hair cosmetic allergy in Thailand.
Methods...
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