Paraphenylenediamine is an active chemical in most hair darkening dyes including 'henna'. Several organisations and individuals have in the past raised their voice against PPD poisoning.from Top India News- News18.com https://ift.tt/2EbAnJ9
Paraphenylenediamine is an active chemical in most hair darkening dyes including 'henna'. Several organisations and individuals have in the past raised their voice against PPD poisoning.
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