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Home › N-alkylamino secondary para-phenylenediamine, composition for dyeing keratin fibers comprising such a para-phenylenediamine, processes using this composition and uses thereof

N-alkylamino secondary para-phenylenediamine, composition for dyeing keratin fibers comprising such a para-phenylenediamine, processes using this composition and uses thereof

US Patent 7338536 · Granted Mar 4, 2008

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