Hair dyeing composition
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jan 26, 2012
app pub date -
Feb 19, 2010
filing date -
Feb 25, 2009
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Abstract
The invention relates to hair dyeing composition comprising (a) a dye of formula (1); (b) ant least one dye selected from the compounds of formulae (2); (3) and (4); wherein D is the radical of a diazo component of the formula (2a); (2b); (2c); (2d); (2f); (2g) or (2h). The invention also relates to the dyeing methods for dyeing keratinous fibers comprising such dyeing composition.
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