Dyeing compositions based on oxidation dyestuff precursors and on nitro benzene dyestuffs and their use for dyeing keratin fibres
Dyeing compositions are disclosed which comprise at least one oxidation dyestuff precursor in combination with at least one direct dyestuff, in an aqueous vehicle, the direct dyestuff being a nitro derivative of the benzene series having the formula: STR1
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(2008/06/13)
Nitro-derivatives of the benzene series and their use in the dyeing of keratin fibres
The invention provides novel nitro-paraphenylenediamine derivatives of the formula: STR1 in which R1 denotes an alkyl group, a monohydroxy- or polyhydroxy-alkyl group or an aminoalkyl group, the amino group of which is optionally monosubstitute
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(2008/06/13)
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